4SR09 | Challenge BS Sprocket
This 9 teeth 1/2″ sprocket with a Pilot Bore of 10 mm is manufactured by Challenge in C45 steel. . This Simplex sprocket fits chain 1/2” x 5/16” and has a part number 4SR09 and is available from stock. If you require additional information please contact Sales on 01952 676926.
3SR12 | Challenge BS Sprocket
This 12 teeth 3/8″ sprocket with a Pilot Bore of 8 mm is manufactured by Challenge in C45 steel. . This Simplex sprocket fits chain 3/8” x 7/32” and has a part number 3SR12 and is available from stock. If you require additional information please contact Sales on 01952 676926.