the 10B A2 attachment has a bent tab on one side with two holes for mounting
This 120R17 sprocket is a durable
Each precision component of this 10B K1 attachment is made from top-quality carbon steel that has been heat-treated for extended working life and durability
10B39 sprockets with a stock bore comes with the standard 20 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes
083 Roller Chain Dimensions
1210 Taper Lock Bushing X 11/16" Bore Bushing Size the 10B A2 attachment hasThis 1210 taper lock bushing is a high quality, durable, and dependable product that has been precisely manufactured to out last and out perform the competition. 1210 taper lock bushings are used in a wide range of applications including; belt pulleys, sprockets, drum pulleys, drive pulleys, tail pulleys, sheaves, and gears, which are items that we also offer! Additionally this bushing features a 11 16" bore with a standard keyway, for more