Weiler's Stem-Mounted Brushes are permanently mounted on 1/4" steel stems, providing quick installation on chuck or collet. High RPM ratings provide faster finishing for the lowest cost-per-piece-brushed. Mounted on 1/4" diameter stem for use with portable tools. Dense fill allows more wire tips to do the work thus increasing the life of the brush. Crimped wire and knot-type end brushes have a high RPM rating. Consider for cleaning and finishing recessed areas or I.D.s.; die, mold and tool cleaning and polishing; rubber and plastic flash removal; rust and paint removal; scale and slag removal; I.D. pipe cleaning; carbon cleaning; weld cleaning; deburring; spot facing. Sold: 1 Each