Step Drill Bit 2 Spiral Groove Pagoda Hole Reamer HSS Cobalt Drilling Counterbore 432mm M35

Item Type: Step Drill Bit Product Material: High speed steel (contains cobalt) Drillable Diameter: Approx. 4mm / 0.16in 6mm / 0.24in 8mm / 0.31in 10mm / 0.39in 12mm / 0.47in 14mm / 0.55in 16mm / 0.63in 18mm / 0.71in 20mm / 0.79in 22mm / 0.87in 24mm / 0.94in 26mm / 1.02in 28mm / 1.1in 30mm / 1.18in 32mm / 1.26in Applicable Materials: Suitable for drilling and reaming operations of 304 stainless steel carbon steel iron plate aluminum plate copper plate plastic plate etc. HIGH SPEED STEEL MATERIAL: Step drill bit is made of high speed steel material possess longer service life CUTTING FASTER AND SMOOTHER: Adopt double cutting blade design cutting faster and smoother bring high working efficiency ADVANCED DOUBLE SPIRAL GROOVE DESIGN: The advanced double spiral groove design is better than the straight groove design which prolongs the service life of the drill bit DRILLING AND REAMING: Suitable for drilling and reaming operations of 304 stainless steel carbon steel iron plate aluminum plate copper plate plastic plate etc. 4?32MM DRILLING DIAMETER: Come with 15 steps sizes drillable diameter from 4?32mm one step drill bit meet all your requirements1 x Step Drill Bit