DYNALINE - PULLEY VARI-SPEED 3-1/4X1/2IN - DYL55490

This variable speed, die-cast aluminum pulley has an outside diameter of 3 1/4 inches and a 1/2-inch bore diameter. The solid type pulley is designed for "A" and "B" belts. Opening the pulley increases the speed at which it rotates. This pulley comes supplied with set screws.