Click to expand Tap to zoom 35A21H Type A Plate Sprocket 21 Teeth for #35 Roller Chain Sale $11.90 SKU 35A21H-SB Quantity One - $11.90 Price Each 2 to 4 - $10.42 Price Each on 5 or More - $9.42 title Quantity One Price Each 2 to 4 Price Each on 5 or More 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 35A21H-SB (1/2") Bore Heat Treated Type A Plate Sprocket for #35 Roller Chain 21 Tooth BORE 1/2" Outside Diameter = 2.710" Pitch Diameter = 2.516" Free shipping in the USA! New from factory.