1/4" Bit Extensions | Chapman MFG

Federal Stock # 1 5120-01-110-5905 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. E2  2" extension is not available with a set screw. 6" & 8" extensions do not fit inside any of our tool cases Please note: Chapman extensions are designed to be used with Chapman screwdriver bits & are not guaranteed to work as a universal tool. Made, hand assembled & inspected in Durham, CT from USA materials.