An assortment of zinc-plated shaft collars from The Hillman Group. Shaft collars are commonly used as mechanical stops, locating components, and/or bearing faces within mechanical systems. Shaft collars create a tight fit and greater holding power without the damage normally caused by set screws alone. Variants included in this assortment range from 1/2" to 1-1/4" in overall outer diameter. Full assortment also includes socket set screws for installation. Full assortments of #58327 contain six (6) refills comprised of Hillman item numbers #58328 - #58333.