End Brush, Product Type End Brush, Quick Change System Not Applicable, Bristle Type Crimped Wire, Bristle Material Brass, Brush Dia. 1/2 in, Wire Dia. 0.005 in, Bristle Length 7/8 in, Grit Not Applicable, Overall Length 2 1/2 in, Compatible Tool Type Straight Grinder, Drill, Impact Driver, Pencil Grinder, Color Silver, Primary Material Application Brass, Connector Type Round Shank, Connector Size 1/4 in, Operating Speed – Maximum 25,000 RPM, Shank Length 5/8 in