Adjustable clutch - Place the wheel (gear, pulley, chain sprocket) between the two friction disks and tighten/loosen the thread to achieve the torque setting required. - Supplied with 2 spring washers - Only one can be fitted for lower transmissible torque - Supplied pre-bored Material: Steel Friction disks do not contain asbestos Option - Bore and keyway to your specifications (Mini order quantity: 30) Info - Friction disks should never come into contact with oil as this could cause damage or affect the performance - Sprocket not supplied