Stahlwille 412-1 Bit holder 1/4 20 mm

Bit holder Inside sockets with hexagon 1/4", DIN 3126 form D 6,3/ISO 1173 form D 6,3. Outside width across flats of tool shank, octagonal 10 mm for use in tools with 10 mm hexagon socket or inside double hexagon (e.g. double-jointed wrench FLEXI, T-jointed wrench, double socket wrench, ratchet ring wrench etc.), hexagon socket with ring compression
spring. Bits are easy to insert, lock securely in place and can be removed without difficulty, also hexagonal with wide groove form E, DIN 3126/ISO 1173). HPQ® high-performance steel.