• Socket 685 B/1 and 685 B/3 for use with bits of 688 E series on electric and pneumatic tools • Socket 685 B/4 for use with bits of 689 E series on electric and pneumatic tools • Special Chrome Vanadium steel • Phosphatized finish • Employ safety pin 235 MCA/8 (U02350207Q) and locking ring 235 MDA/8 (U02350227Q) for 685 B/1 • Employ safety pin 235 MCA/9 (U02350208Q) and locking ring 235 MDA/9 (U02350228Q) for 685 B/3 and 685 B/4