The Power-Lock boasts a wide range of variations. This friction type locking device allows easy, strong, and secure connections between shafts and hubs without backlash. The environment-resistant series is also available, which is suitable for use in clean rooms. Most popular multipurpose type Standard ( Inch sizes available) Electroless Nickel-Plated Stainless Multipurpose locking devices easy to install and remove. Extensive range of sizes and compatible with large diameter shafts. Fewer bolts compared to other company’ s products by employing high-strength tightening bolts, allowing reduced time and manpower for installation. Comes in stainless steel and electroless nickel-plated finish. Inch sizes also available. The AS Series Power-Locks are constructed of the following five parts: taper rings ( A) and ( B) , inner and outer rings and locking bolts. Simply tighten these bolts to achieve a completely secure connection.