The Hillman Group 58330 Shaft Collar 7/16 X 7/8 X 7/16-inch 6-pack

Commonly found in power transmission applications, such as motors and gearboxes Effective on both hard and soft-material shafts Easily installed where major assembly/disassembly would otherwise be required Included variants range from 1/2" to 1-1/4" in overall outer diameter All shaft collars include a socket set screw for installation