D120B12 Sprocket With Stock Bore 120B25 Sprockets The 16B-4 offset link is

The 16B-4 offset link is also referred to as a 16B-4 half link

Dimension (M): 3/16"

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For more information on a BK80H Pulley

This 50BS13 sprocket featured a 3/4" finished bore with a key-way and two set screws

D120B12 Sprocket With Stock Bore 120B25 Sprockets The 16B-4 offset link isThis D120B12 sprocket is a durable, high quality, and precision double sprocket with 12 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #120 2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide