R1 Split Taper Bushing X 30mm Bore 55-Tooth Sprocket First you identify the chain

First you identify the chain pitch to confirm that you are using this on a #140 roller chain

This 2050B24 sprocket is durable

This AL344 chain breaker sets its self apart from others in the market by having a push-through design

Maximum Bore: 21mm

R1 Split Taper Bushing X 30mm Bore 55-Tooth Sprocket First you identify the chainThis R1 Bushing with a 30 millimeter bore is a high quality precision product that is built for durability and strength. R1 bushings are used in an extensively wide range of applications, including; sprockets, shaves, pulleys, gears, and much more, we also offer all of these products. What sets this bushing apart is the high quality steel construction along with precise manufacturing and high quality control; this ensures that you always get a premium