Cup Brush, Product Type Cup Brush, Quick Change System Not Applicable, Bristle Type Crimped Wire, Bristle Material Stainless Steel, Brush Dia. 5/8 in, Wire Dia. 0.005 in, Bristle Length 1/4 in, Grit Not Applicable, Compatible Tool Type Straight Grinder, Drill Press, Impact Driver, Pencil Grinder, Color Not Applicable, Primary Material Application Aluminum, Brass, Copper, Stainless Steel, Wood, Connector Type Round Shank, Connector Size 1/8 in, Operating Speed - Maximum 37, 000 RPM. This item has been restricted from sale in the following state (s): []