• Ko-ken 3/8 Sq. Dr. 12-Point 125mm Length Extension Socket - 10mm Front View
  • Ko-ken 3/8 Sq. Dr. 12-Point 125mm Length Extension Socket - 10mm mechanical drawing
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Ko-ken 3/8 Sq. Dr. 12-Point 125mm Length Extension Socket - 10mm

$35
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SKU: 3117M.125-10

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    Ko-ken 3/8 Sq. Dr. 12-Point 125mm Length Extension Socket - 10mm Front View

    Ko-ken 3/8 Sq. Dr. 12-Point 125mm Length Extension Socket - 10mm
    Reach Recessed 10mm Fasteners Without Extra Stacks

    Reach Recessed 10mm Fasteners Without Extra Stacks

    This Ko-ken 3/8" drive extension socket combines socket + extension into one rigid piece, so you get better feel and less wobble than stacking multiple extensions and a deep socket. The 125mm length is ideal for recessed 10mm hardware on brackets, covers, and housings where a standard socket won’t reach. 12-point opening for fast engagement in tight swing-room. Chrome finish for everyday hand-tool use.

    Specs

    Spec

    Detail

    Brand

    Ko-ken

    Drive Size (Input)

    3/8"

    Drive Shape

    Square

    Socket Size (Output)

    10mm

    Opening

    12-point

    Type

    Extension Deep Socket

    Overall Length

    125mm

    Finish

    Chrome

    Dimensions (per line drawing)

    D1: 14.5mm; D2: 18mm; H1: 10mm; H2: 44mm; L: 125mm

    Why Use an Extension Socket?

    • Faster setup: one tool instead of socket + extension(s)
    • More control: fewer joints = less twist and slop
    • Better access: reaches recessed fasteners behind covers, brackets, and assemblies
    • Cleaner fit: reduces the chance of the stack contacting nearby components

    12-Point vs 6-Point (Quick Note)

    • 12-point engages quicker because it has more start positions
    • Great when you’re working in tight spaces with limited swing
    • Best for hand-tool use on properly sized, non-damaged fasteners

    How to Use

    1. Fully seat the socket on the fastener.
    2. Keep the drive line straight to avoid side-loading.
    3. Break loose by hand first if possible, then run it out.

    In the Box

    • (1) Ko-ken 3/8" Drive 10mm 12-point 125mm extension socket

    California Proposition 65 Warning

    WARNING: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.