Click to expand Tap to zoom 100A12H-SB Type A Plate Sprocket 12 Teeth for #100 Roller Chain Sale $26.50 SKU 100A12H-SB Quantity One - $26.50 title Quantity One 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 100A12H - SB (1 1/4") Bore Heat Treated Type A PLATE Sprocket for #100 Roller Chain 12 Tooth Outside Diameter = 5.420" Pitch Diameter = 4.830"