Click to expand Tap to zoom 50A18H-SB Type A Plate Sprocket for #50 Roller Chain - 18 Tooth - 5/8" Stock Bore Sale $19.70 SKU 50A18H-SB Quantity One - $19.70 Price Each on 2 to 4 - $17.73 Price Each on 5 or More - $15.76 Quantity Discounts Quantity One Price Each on 2 to 4 Price Each on 5 or More 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. 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 in the USA!