Classical Meets AS Standard Uxcell BK52-1/2 1/2"Bore 4.95"OD Single Groove Web Sheave V-belt Sheave Pulley outside diameter is 2., 20 inch, 1 Groove V-Belt Pulley - 3L, A Belt Section, 1 Groove, 2.2000 in (A) Pitch Dia., 2.2000 in O.D., Finished, 1/2 in Bore Size, Cast Iron Material Inner diameter:1/2, Bore type:Fixed Bore This AK22 Pulley 1/2 bore is directly interchangeable with other manufacturers, is 2.20 in diameter, is used with A style V-Belts, and is manufactured in accordance with ARPM Standard IP20 for safe operation. What separates this AK22 pulley from the others is that it is made using a high grade-35 cast iron, is phosphate coated, painted, and balanced at the factory. Using the grade 35 cast... Classical V-belt sheave fits a variety of classical profile V-belts, suitable for use in many existing power transmission drives. Maurey 2BK110H Hi-Q Bushed Cast Iron Sheaves, 2 Grooves, 10.75 OD, H Cast iron for resistance to wear and galling