Click to expand Tap to zoom 50A18H-SB TYPE A PLATE SPROCKET 18 TEETH FOR #50 ROLLER CHAIN Sale $13.75 SKU 50A18H-SB Quantity One - $13.75 Price Each for 2 to 4 - $12.45 Price Each for 5 or more - $11.55 Quantity One Price Each for 2 to 4 Price Each for 5 or more title 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 50A18H - SB (5/8") Bore Heat Treated Type A PLATE Sprocket for #50 Roller Chain 18 Tooth Outside Diameter = 3.920" Pitch Diameter = 3.599" Free Shipping