This bushing inserts into the center of the pulley and slides over the shaft, as you tighten down the bolts on the H bushing it will tighten down on the shaft. The bushing is made of solid steel and precision machined to ensure high quality and secure attachment to your motor/engine shaft. Specifications: · Belt Section: 5L, B, BX · Grooves: 1 · OD: 5.75 · Belt Top Width: 5/8″ – .660 · Bushing/Bore Type: H · Weight: 2.45... Cast Iron 5.75 Single Groove Belt B Section 5L Pulley w/ 1 Sheave Bushing Masterdrive single groove 5.75 cast iron pulley/sheave with 1 H bushing for B section belt is a high-quality 2-piece pulley that measures 5.75 outside diameter and is designed to be used with an H style bushing. Specifications: Solid Steel Bushing Single Groove Pulley 1 Bushing Included For Use on 1 Shaft Outside Diameter of Pulley: 5.75 High-Quality Cast Iron Construction Accepts: B Section / 5L Section Belts Solid Steel Bushing Single Groove Pulley 1 Bushing Included Browning 1042498 - BK60H Cast Iron 3.15" Single 1 Groove Belt B Section 5L Pulley W/ 1" Sheave Outside Diameter of Pulley: 5.75 6pcs Independence Day Decorations Hanging Paper Fans Red White Blue USA Flag Pattern Paper Ornaments for 4th of July USA American Party Room Ceiling Wall Home Decorations Supplies Photo Props This style of pulley is much more secure than a standard single-piece pulley.