Hillman 883555 Shaft Collar, 7/8 in Dia Bore, 1-1/2 in OD, Zinc-Plated

Shaft collars are commonly used as mechanical stops, locating components and/or bearing faces within mechanical systems. They are easy to adjust with set screws. Shaft collars create a tight fit and greater holding power without the damage normally caused by set screws alone. To install, simply slide these collars on to a shaft and tighten the set screw to hold the collar in place.