Drive components / connecting parts to DIN 3122 / 3123; external square drive to DIN 3120 B 20 with sprung pin; internal square drive to DIN 3120 D 20 with hole and release knob.
Standard:
DIN 3122-A 20
Material:
Chrome vanadium steel, chrome-plated.
Square drive: 3/4 in
overall length: 500 mm