Deliver toUnited Arab Emirates
Ko-ken PK3763/6 3/8 Sq. Dr. Wobble-Fix Extension Bar set 32-250mm ABS Tray 6 pieces

Description:

  • Input Drive Size: 3/8"
  • Drive Shape: Square
  • Includes: 3760 Extension Bars (32, 50, 75, 125, 150, 250 mm)
  • Output Sizes:32, 50, 75, 125, 150, 250 mm
  • Pieces: 6 Extension Bars and 1 ABS Tray

  • Wobble-Fix refers to the section of the extension bar that holds the socket. Specifically, in reference to the flexibility of movement that a socket has when attached to an extension bar with this feature. Wobble-Fix extension bars offer two different secure solutions for holding a socket in place. The “Fix” solution holds the socket securely and steadily on the extension bar permitting no movement. The “Wobble” solution permits movement of up to a 15 degree angle.

    Reviews:

    5.0 out of 5 stars Some things are just worth the price

    M. · April 13, 2025

    Eye-wateringly expensive, but a beautiful tool that solves access problems. Outstanding fit and finish. Set covers most extension combination needs.

    5.0 out of 5 stars The best

    T.G. · August 3, 2025

    The best wobble extensions on the market. Koken is top quality. Rivals snap on and beats snap on in many ways IMO.

    5.0 out of 5 stars My favorite set of extensions

    B.r.i.t.w. · February 23, 2025

    Koken is the originator of these so I figured these would be the best design and they are. The knurling is perfect and it has gaps to stop them from rolling. They are also in an actual usable spot on the extension! I've heard people complain of popping it onto the normal from wobble but I have never had that problem, maybe an issue with other brand wobble extensions. I don't use any of my other 3/8 chrome extensions anymore. These led me to buy many more koken zeal products.

    5.0 out of 5 stars On par with tool truck brands.

    h. · February 9, 2025

    Excellent set of extensions. A couple of them are kind of close in length so that makes them redundant. That is not a blemish on the quality of the extensions. On par with tool truck brands.

    5.0 out of 5 stars Saw These at SEMA

    A.C. · January 27, 2025

    I saw these extensions at SEMA, and I had to get them. I like the way the are made to help spin the extension. Also, also allows your socket to wobble, or be fixed. Koken makes a quality built tool.

    5.0 out of 5 stars New favorite

    j. · June 14, 2025

    Ive been a mechanic for 25+yrs and these are my new favorite extension.

    5.0 out of 5 stars Get's the job done

    E.Y. · December 12, 2024

    Very nice set with excellent Japanese quality. A must have

    5.0 out of 5 stars My favorite set of 3/8 drive extensions!

    D.S. · December 31, 2024

    My favorite set of 3/8 drive extensions! Using a combination of these stacked on each other will get your socket into places previously not possible.

    Awesome

    P.J. · May 30, 2025

    Awesome extensions, love the knurling

    最高

    A. · December 15, 2024

    首が振れるウォブル押し込めばかっちりロック回しやすいローレット加工ほぼガタツキがない精度これ以上何を求めればいいかわかりません

    品質と使い勝手。

    C. · July 25, 2023

    首振りと奥まで差し込むと固定が出来る事が重宝する。あとはローレット加工がしてあるので滑らず回せる事。

    Fantastic fix and wobbly!!!

    A.C. · September 2, 2024

    Best Knurling you will ever see on a set of extension bars, its deep, they put the knurling on the right spot on the end engagement point not on the shaft, so its easy to use fingers for starting off a fastener or releasing at the end of threads. It actually takes a bit of force to engage the fix, so less hassle in pressure engaging the fix point if not wanted, if you are working at an angle the fix is not going to engage anyway. Firm fit of ratchet drives or between extensions shows very good controlled tolerance of forgings, you are not purchasing sloppy junk, its Koken and quality is real not just implied.

    コーケンクオリティ

    A.カ. · April 3, 2024

    流石コーケン。使いやすいですね。スナップオンも持ってますが出番は激減ですね。

    Ko-ken PK3763/6 3/8 Sq. Dr. Wobble-Fix Extension Bar set 32-250mm ABS Tray 6 pieces

    Product ID: UO004VXZVTZ
    Condition: New

    4.8

    AED57679

    Price includes VAT & Import Duties
    Availability: In Stock

    Quantity:

    |

    Order today to get by 7-14 business days

    This item qualifies for free delivery

    Returns & Warranty policies

    Imported From: United States

    At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.

    BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.

    Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.

    If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.

    Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.

    All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.

    While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.

    Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.

    BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.

    All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.

    All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.

    Similar suggestions by Bolo

    More from this brand

    Similar items from “Socket Wrenches”

    Ko-ken PK3763/6 3/8 Sq. Dr. Wobble-Fix Extension Bar set 32-250mm ABS Tray 6 pieces

    Product ID: UO004VXZVTZ
    Condition: New

    4.8

    Ko-ken PK3763/6 3/8 Sq. Dr. Wobble-Fix Extension Bar set 32-250mm ABS Tray 6 pieces-0

    AED57679

    Price includes VAT & Import Duties
    Availability: In Stock

    Quantity:

    |

    Order today to get by 7-14 business days

    This item qualifies for free delivery

    Returns & Warranty policies

    Imported From: United States

    At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.

    BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.

    Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.

    If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.

    Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.

    All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.

    While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.

    Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.

    BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.

    All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.

    All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.

    Description:

  • Input Drive Size: 3/8"
  • Drive Shape: Square
  • Includes: 3760 Extension Bars (32, 50, 75, 125, 150, 250 mm)
  • Output Sizes:32, 50, 75, 125, 150, 250 mm
  • Pieces: 6 Extension Bars and 1 ABS Tray

  • Wobble-Fix refers to the section of the extension bar that holds the socket. Specifically, in reference to the flexibility of movement that a socket has when attached to an extension bar with this feature. Wobble-Fix extension bars offer two different secure solutions for holding a socket in place. The “Fix” solution holds the socket securely and steadily on the extension bar permitting no movement. The “Wobble” solution permits movement of up to a 15 degree angle.

    Reviews:

    5.0 out of 5 stars Some things are just worth the price

    M. · April 13, 2025

    Eye-wateringly expensive, but a beautiful tool that solves access problems. Outstanding fit and finish. Set covers most extension combination needs.

    5.0 out of 5 stars The best

    T.G. · August 3, 2025

    The best wobble extensions on the market. Koken is top quality. Rivals snap on and beats snap on in many ways IMO.

    5.0 out of 5 stars My favorite set of extensions

    B.r.i.t.w. · February 23, 2025

    Koken is the originator of these so I figured these would be the best design and they are. The knurling is perfect and it has gaps to stop them from rolling. They are also in an actual usable spot on the extension! I've heard people complain of popping it onto the normal from wobble but I have never had that problem, maybe an issue with other brand wobble extensions. I don't use any of my other 3/8 chrome extensions anymore. These led me to buy many more koken zeal products.

    5.0 out of 5 stars On par with tool truck brands.

    h. · February 9, 2025

    Excellent set of extensions. A couple of them are kind of close in length so that makes them redundant. That is not a blemish on the quality of the extensions. On par with tool truck brands.

    5.0 out of 5 stars Saw These at SEMA

    A.C. · January 27, 2025

    I saw these extensions at SEMA, and I had to get them. I like the way the are made to help spin the extension. Also, also allows your socket to wobble, or be fixed. Koken makes a quality built tool.

    5.0 out of 5 stars New favorite

    j. · June 14, 2025

    Ive been a mechanic for 25+yrs and these are my new favorite extension.

    5.0 out of 5 stars Get's the job done

    E.Y. · December 12, 2024

    Very nice set with excellent Japanese quality. A must have

    5.0 out of 5 stars My favorite set of 3/8 drive extensions!

    D.S. · December 31, 2024

    My favorite set of 3/8 drive extensions! Using a combination of these stacked on each other will get your socket into places previously not possible.

    Awesome

    P.J. · May 30, 2025

    Awesome extensions, love the knurling

    最高

    A. · December 15, 2024

    首が振れるウォブル押し込めばかっちりロック回しやすいローレット加工ほぼガタツキがない精度これ以上何を求めればいいかわかりません

    品質と使い勝手。

    C. · July 25, 2023

    首振りと奥まで差し込むと固定が出来る事が重宝する。あとはローレット加工がしてあるので滑らず回せる事。

    Fantastic fix and wobbly!!!

    A.C. · September 2, 2024

    Best Knurling you will ever see on a set of extension bars, its deep, they put the knurling on the right spot on the end engagement point not on the shaft, so its easy to use fingers for starting off a fastener or releasing at the end of threads. It actually takes a bit of force to engage the fix, so less hassle in pressure engaging the fix point if not wanted, if you are working at an angle the fix is not going to engage anyway. Firm fit of ratchet drives or between extensions shows very good controlled tolerance of forgings, you are not purchasing sloppy junk, its Koken and quality is real not just implied.

    コーケンクオリティ

    A.カ. · April 3, 2024

    流石コーケン。使いやすいですね。スナップオンも持ってますが出番は激減ですね。

    Similar suggestions by Bolo

    More from this brand

    Similar items from “Socket Wrenches”