Adaptor from square to hex. For 1/4" hex bits as per DIN ISO 1173-C 6.3 and E 6.3 and Wera connecting series 1 and 4; with quick-release chuck.
FEATURES:

• 3/8" Zyklop adaptor with quick-release chuck for rapid bit change
• Suitable for 1/4" hex bits (Wera connecting series 1 and 4)
• Chrome vanadium steel