1" to 3/4", chrome-vanadium, chromed, drive with locking pin

1" to 3/4", for impact and machine operating, square hollow, chrome-vanadium steel
With hole for locking pin or locking spring and groove for O-ring, phosphated, oiled, square massive drive

1" inserts for 3/4" ratchet drive, suitable for impact screwdriver, chrome-molybdenum, black