Steel 1-3/8" Keyed Bore Split Taper H-Style Bushing for use with Pulley/Sheave Masterdrive Keyed 1-3/8" bore split taper H bushing For pulley/sheave. This is a high-quality steel bushing made for pulleys that require an H-style bushing. 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. This style is much more secure than a standard single-piece pulley. This listing includes an H bushing to fit on a keyed 1-3/8" shaft. Specifications: 1-3/8" Bushing Solid Steel Bushing H-Style Bushing For use on Keyed Shaft For Use on 1-3/8" Shaft