Stahlwille 415B Bit ratchet

Reversible, 1/4" inside hexagon drive with 22 teeth
2-component handle
DIN 3126/ISO 1173 D 6.3 for BITS
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)