Click to expand Tap to zoom 100R21H Split Taper Lock Sprocket Sale $109.00 SKU 100R21 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 100R21H Split Taper Lock Sprocket Browning Style For #100 Roller Chain 21 Tooth Outside Diameter = 9.043" Pitch Diameter = 8.3869" Requires Bushing R1 Order Separately Free Shipping In Lower 48 States Live Outrageously!