An assortment of carbon brushes and parts for Milwaukee brand power tools from The Hillman Group. Carbon brushes conduct current between stationary wires and moving parts, most commonly in a rotating shaft. Variants included in full assortment range from 1/4" to 9/16" in diameter. Full assortments of #58667 contain sixteen (16) refills comprised of Hillman item numbers #403909 - #403917, #403919, and #403921 - #403926.