Overview Reviews Product Description HSS Bright finish 118° Degree point Fast spiral design is ideally suited for non-ferrous materials such as aluminum, zinc, copper, etc. Helix design also makes them well suited for deeper holes in both non-ferrous materials as well as mild steel Clarkson Osborn Catalog Product Videos Custom Field Diameter #4 Flute length 2-1/2" Overall length 3-3/4" Package quantity/sold as each 10 Product Reviews Write a Review Write a Review × Clarkson-Osborn #4 Bright Finish Fast Spiral Jobber Drill Bit DR73204 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *