Lineman’s B Wrench – JIC-650. Forged and heat treated, this Lineman’s Wrench is used on pole line hardware. It is open-end double end type with two sizes of openings at each end and an oval hole for turning pole steps. The end openings accommodate nuts for 3/8″, 1/2″, 5/8″ and 3/4″ bolts and the head of the 1/2″ drive screw. The faces of the Lineman’s Wrench openings are offset to provide handle clearance. 13″ Long.