Overview Reviews Product Description HSS Black oxide finish for increased wear resistance and added lubricity 135° Degree split point for fast penetration and accurate starting (self-centering) which eliminates "walking" and reduces the thrust force needed Intended for hand drilling in sheet metal, thin wall tubing, or other shallow hole drilling Due to their short flute design and heavy web construction, they are more rigid and durable than jobber or stub drills Clarkson Osborn Catalog Product Videos Custom Field Diameter 4mm Flute length 16mm Overall length 55mm Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 4mm HSS Pan-L Drill Bit DR76400 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *