The Amar Enterprises ID 20 X OD-28 Keyless Bush is a type of mechanical device used to join two components together in a secure and reliable way. The bush is made from high-grade carbon steel, and is designed to be strong, durable, and corrosion-resistant. The bush has a keyless design that allows for quick installation and removal, and is ideal for applications where a secure connection is required. The bush is also designed to reduce vibration and noise.

Keyless shaft bushings provide secure connections between the shaft and hub while reducing stress or wear to mounted components. The keyless bushing does not rely on the key to transmit torque, but instead utilizes the entire circumference of the shaft for more efficient performance with no backlash.