Wera Zyklop 3/8" Square Drive Screwdriver Bit Holder

The Wera Zyklop 3/8" Square Drive Screwdriver Bit Holder is a precision adaptor that converts a 3/8" square drive to accept 1/4" hexagonal screwdriver bits, making it an essential accessory for tradespeople using Zyklop ratchets. Constructed from chrome vanadium steel, this adaptor is built to withstand the demands of professional use. It conforms to DIN ISO 1173-C 6.3 and E 6.3 standards, ensuring reliable compatibility across a wide range of 1/4" hex bits, including Wera connecting series 1 and 4. The integrated quick-release chuck allows for rapid bit changes without interrupting workflow — particularly useful when switching between drive types on site. At 44mm in length, it keeps the overall tool profile compact while providing the necessary reach for most fastening applications.