Stahlwille 412 Bit holder, 1/4″ Drive for 1/4″ bits
Socket, 1/4″ inside hexagon, DIN 3126/ISO 1173 D 6.3.Internal hex drive with a collar-thrust spring. Bits are easy to insert, lock securely in position and can be removed just as easily; even hex bits with a wide groove (Type E, DIN 3126/ISO 1173)Q high performance steel.
