DescriptionThis is the HSS steel step cone drill titanium bit hole cutter, which is made from HSS steel, and with the titanium coated to reduce friction and heat. Suitable for cutting holes in a variety of materials including steel, brass, wood, plastic, etc.Featutres- Color: As Shown - Material: HSS High-speed Steel, titanium - Size: 9.63 x 3 x 3 cm; 5-35 mm - Made from HSS Steel, titanium coated to reduce friction and heat. - Round handle with straight groove design provides faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps. - Suitable for working on the hardness below 28 , such as steel, and stainless steel, below 3mm and unquenched is required. - Perfect for using to cut holes in a variety of materials including steel, brass, wood, aluminium copper, fibreglass, plastic, and PVC etc.