Click to expand Tap to zoom 100A18H-SB A-Plate Sprocket 18 Teeth for #100 Roller Chain Sale $56.50 SKU 100A18H-SB 100A18H - SB (1-1/4") Bore Type A PLATE Sprocket for #100 Roller Chain 18 Tooth Outside Diameter = 7.840" Pitch Diameter = 7.199" Free shipping in the USA! Quantity One - $56.50 title Quantity One 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart More payment options 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.