Round Tube Brush Product Type Round Tube Brush Stem Style Single Brush Material Steel Brush Dia 5/8 in Compatible Tube Outer Diameter Not Applicable Stem Diameter 3/16 in Brush Length 1 in Wire Dia 0.005 in Overall Length 3 1/2 in Compatible Tool Type CNC Machine Drill Press Drill Operating Speed - Maximum 2 000 RPM Series Gemini