Click to expand Tap to zoom 40A18H-SB Type A Plate Sprocket 18 Teeth for #40 Roller Chain Sale $10.75 SKU 40A18H-SB Quantity One - $10.75 Price Each for 2 to 4 - $9.14 Price Each for 5 or more - $8.10 title Quantity One Price Each for 2 to 4 Price Each for 5 or more 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 40A18H - SB (5/8") Bore Heat Treated Type A PLATE Sprocket for #40 Roller Chain 18 Tooth Outside Diameter = 3.140" Pitch Diameter = 2.879" Free shipping in the USA!