Double Spiral Tube Brush Product Type Double Spiral Tube Brush Stem Style Double Brush Material Steel Brush Dia 1 in Compatible Tube Outer Diameter Not Applicable Stem Diameter 1/4 in Brush Length 2 1/2 in Wire Dia 0.006 in Overall Length 5 1/2 in Compatible Tool Type Drill Operating Speed - Maximum 1 900 RPM Package Quantity 10