• For hand-operated sockets with square drive as per DIN 3120, ISO 1174, with ball locking device • Dual-material handle, for easy handling • Matt chrome-plated • Coupler in acc. with DIN 3120 - A 6.3, ISO 1174, with ball locking device • Internal square in the handle suitable for ratchet-performed drive as per DIN 3120 - C 6.3, ISO 1174, with ball retaining groove • Chrome-vanadium steel