1.Multipurpose Ideally structed and highly reliable locking devices. 2.Low Maching Costs Keyways, splines, presses and thermal fittings are not required. Optimum performance is achieved with low shaft tolerance of h8, hub bore tolerance of H8, and surface roughness of 12S, thererby minimizing the total maching costs. 3.Easy to Install and Remve Installs or removes just by the tightening or loosening of bolts. No need to hassle with adjusting keyways and thermal fittings. 4.Options to Fit Every Applications Stainless steel and electroless nickel plating options are offered for standard models. Both are highly durable in corrosive or clean room environment.