The Rotabroach SITE H3RO Step Drill is expertly engineered for high-performance drilling into thin gauge materials. Featuring a spiral flute and split point design, it ensures smooth and precise cuts while reducing the risk of material deformation. Its unique heat-resistant coating enhances durability and extends tool life, making it an efficient and reliable solution for professional use. Features and Benefits • Drill new holes and expand thin gauge material with an impact wrench and Site H3RO • Utilise in site H3RO holders for impact wrenches or any standard drill chuck • Holes from 4mm to 30mm in diameter, each step 5mm • High performance coating for up to 75% longer tool life • Suitable for use in standard 3 jaw drill chucks • All Step Drills include a spiral flute with a 118 Degree point Specifications • Diameter Range: 4mm - 12mm • Shank: 7/16" Hex Impact Shank