"Chicago Die Casting" Single V Grooved Pulleys Die Cast 5/8" bore. 7" outer diameter. 6.75" pitch diameter with no spokes. For 4L or 1/2 by 11/32 inch belts. In Sta-Pak cartons. A-section-die cast. All pulleys are with slotted headless set screws. For A belts, pulleys from 2 to 12 inch have keyways except 3/8 and 1/2 i