40BS42 Sprocket With 7/8" Finished Bore Rudd Tree Marking Paint the 08B SK1 attachment has

the 08B SK1 attachment has a straight tab on both sides with one hole each for mounting

40BS40 1" Finished Bore Sprocket Dimensions:

Dimension (H): 42

Part #: UCTB 210

40BS42 Sprocket With 7/8" Finished Bore Rudd Tree Marking Paint the 08B SK1 attachment hasThis 40BS42 sprocket features a 7 8" finished bore including a key way and two setscrews. It is a durable, high quality, and precision sprocket that fully meets all ANSI Standards which insures proper contact between the #40 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. We also offer stock bore sprockets,