Sure-Grip® quick detachable bushings are easy to install and remove. Split-through flange and taper provide a true clamp on the shaft that is equivalent to a shrink fit. All sizes except JA and QT have a set screw over the key to help maintain the bushing's position on the shaft until the cap screws are securely tightened. Versatile Sure-Grip® bushings permit the mounting of the same mating part on shafts of different diameters and the mounting of different sheaves on the same shaft using the same bushing. TB Wood's® Sure-Grip® QD Bushing, Flangeless, 1-7/8 in Bore Dia, 7/16 in Barrel Dia, 3-3/4 in Bolt Circle, 4 Bolt Holes, 3/8-16 x 2 in Screw, 45000 in-lb, 2-3/8 in Overall Length, 1/2 x 1/4 in Keyway, Ductile Iron