Click to expand Tap to zoom 25A40H-SB Type A Plate Sprocket for #25 Roller Chain 40 Tooth Sale $16.48 SKU 25A40H-SB 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart #25 A Plate Sprocket with Stock Bore Tooth #: 40 Stock Bore: 1/2" Outside Diameter: 3.327" Pitch Diameter: 3.187" Free shipping in the USA! (Picture not of exact product)