Professional step drill set for commercial or occasional use 4mm – 35mm step drills 5pc step drill set A set of 5 different step drills, stepped cone cutters Step drills offer a significant advantage over cone drills because they offer a positive stop when a hole reaches a certain size Cuts a perfectly round hole in sheet metal Saves time as you don’t have to keep changing the dill size for a larger hole to be drilled Works perfectly on drilling holes in a number of materials including steel, copper, aluminium, plastic etc... Self – starting penetrate, no working and no pilot drill required Manufactured from HSS for maximum strength and durability 12mm flat shanks so suitable for use in most drilling machines, whether, electric, battery or air Double flutes make a perfectly round hole and automatically deburr as you drill For complete performance each time please ensure that the drills are well lubricated, especially when drilling aluminium HRC 62 Drills Self starting design SET INCLUDES THE FOLLOWING SIZE DRILLS • DRILL 1 STEPS – 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm and 12mm • DRILL 2 STEPS – 4mm, 6mm, 8mm, 10mm and 12mm • DRILL 3 STEPS – 6mm, 8mm, 10mm, 12mm, 14mm, 16mm and 18mm • DRILL 4 STEPS – 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm and 22mm • DRILL 5 STEPS – 6mm, 8mm, 10mm, 13mm, 16mm, 19mm, 21mm, 23mm, 26mm, 29mm, 31mm, 33mm and 35mm Comes in metal tin for easy storage and transportation