Crimped Wire End Brush, Fill Material Stainless Steel, Brush Dia. 1", Max. RPM 22,000, Wire Dia. 0.006", Shank Size 1/4", Trim Length 1", Overall Length 3", For Use With Power Drills, Drill Presses, Die Grinders, Right Angle Air Die GrindersFeatures:Shank Size -1/4" Trim Length -1" Overall Length -3" For Use With -Power Drills, Drill Presses, Die Grinders, Right Angle Air Die Grinders UNSPSC -23131503UNSPSC -23131503WARNING:California ResidentsThis product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm.California proposition 65 warning