Jaw clutch assemblies are often used with 78 chain and allow for easy engagement/disengagement of the sprocket teeth with the chain. These are made both universal and unidirectional styles. These Non-metallic shear pin sprockets will protect down line equipment without threat of seizure due to corrosion. Traditionally these parts were made of metallic materials but our improved assembly was designed to improve wear life and eliminate failure due to corrosion. Different tooth counts and bore sizes are available upon request.