1/4" Bit Extensions | Chapman MFG

Regular price $ 1.75
1/4" Bit Extensions | Chapman MFG
1/4" Bit Extension | Chapman MFG
CME-1SS 3 5/8" Extension WITH SET SCREW
E2 2" Extension
1/4" Bit Extensions | Chapman MFG


  • 3 5/8" length extensions are available with or without a set screw
  • Set screw is adjustable with CMS-3 .050 Allen hex insert bit & enables another extension/bit to be locked in the extension
  • CME-01 2" extension is not available with a set screw
  • Chapman extensions are designed to be used with Chapman bits & are not guaranteed to work as a universal tool
  • Check out our stubby screwdriver handles

Federal Stock # 1 5120-01-110-5905

Made, hand assembled & inspected in Durham, CT from USA materials. 


•Designed to be used in between the ear stops and ratchet on the 3 5/8" extension

•Effectively makes the extension 3/4" longer

•Please note that is round, not hex, on the inside and not intended/will not work to turn extensions/bits as a spinner does

•Does not work with older extensions made with higher ear stops

Shipping & Warranty 

Tools can be returned/exchanged in new condition within 45 days of receipt of shipment.

• Refunds are issued once the tools arrive to us

• Shipping & handling charges are non-refundable

• Contact us for a return authorization #

Domestic orders shipped next business day via USPS.

• International orders ship in 3 business days

• UPS, FedEx, DHL available - please contact us

Tools are guaranteed to be as represented & free of defects caused by defective materials/faulty workmanship.

• To keep open stock part prices reasonable, we can not offer replacement of worn tools that wear out/break

• Tool replacement requires that faulty parts are returned with proof of purchase within 3 years

• Warranty does not cover products that are improperly used/abused/altered

Ratchet/Extension Tips & Tricks

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