Double Spiral Tube Brush Product Type Double Spiral Tube Brush Stem Style Double Brush Material Steel Brush Dia 2 in Compatible Tube Outer Diameter Not Applicable Stem Diameter 15/64 in Brush Length 7/8 in Wire Dia 0.01 in Overall Length 5 in Compatible Tool Type CNC Machine Drill Press Drill Operating Speed - Maximum 3 000 RPM Series Gemini