Description Fitment: 4 Pack Adjustable C Spanner Hook Wrenches cover the most commonly needed sizes of 3/4″ to 2″, 1-1/4″ to 3″, 2″ to 4-3/4″, and 4-1/2″ to 6-1/10″; Ideal for adjusting, loosening, or tightening various fasteners like locknuts, bearings, and collars in a wide range of diameters .