US PRO Tools 24mm 3/4" DR 12 Point Impact Socket 3717. Forged from chrome moly steel with black phosphate coating for protection. Hardened and tempered for enhanced durability. Size: 24mm. 12 Point double hex socket. 3/4" drive so will fit any 3/4" drive ratchets / bars / extensions etc. Total length of socket: 51mm. Outside diameter.