General description The Sollbry Step Drill Bit is a versatile tool designed for drilling holes ranging from 10 to 45 mm in various materials including metal, wood, plastics, brass, and aluminum. Made from high-hardness high-speed steel, this drill bit offers excellent wear and chip resistance, ensuring a long service life. Its unique design allows for drilling multiple sizes without the need for changing bits, making it an essential tool for both DIY enthusiasts and professionals. Technical specifications Material: High-speed steel Size range: 10 to 45 mm Number of steps: 8 (10, 15, 20, 25, 30, 35, 40, 45 mm) Usage Drilling holes in metal, stainless steel, aluminum, copper, plastic, and plexiglass Ideal for tasks such as cable management, car bodywork, rainwater tanks, and wood paneling