HIGH-QUALITY MATERIALS: Our step drill is made of high-speed steel, providing fast, comfortable, and smooth drilling. Titanium Coated: The titanium coated taper drill bit has good resistance to corrosion, heat and rust. reduces friction and heat; for longer life even at extreme temperatures. 13 Sizes of Drill Bits: You only need step drill bits for different hole sizes. There are 13 sizes on the step drill: 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm, 32mm, 35mm. Fast Drilling: The double blade design allows for faster and smoother cutting. Please note that when working on the step drill, pour water to cool the step drill. The service life of the HSS step drill is effectively extended. Material: The taper drill bit is suitable for household repairs and light duty work such as drilling holes in plastic, copper, aluminum and many other types of sheet metal. but not suitable for stainless steel. 5-35mm HSS Stepped Metal Drill Bit with Small With its high speed steel construction and dual blade design, the drill bit Stepped provides faster, more comfortable and smoother speed. drilling. The titanium coating ensures this countersink bit has excellent durability, ideal for household repairs and simple jobs such as drilling holes in plastic, copper, aluminum and many other types of sheet metal, but not suitable to stainless steel. With a small case, the drill can be easily stored and transported. Features: HSS step drill bit made of high-speed steel with double cutting blades offers faster drilling, comfortable and fluid. With a titanium coating, the step drill offers good resistance to corrosion, heat and rust. Even at extreme temperatures, the titanium coating guarantees a longer service life. For different hole sizes, you only need a step drill to fix the house and work easily. Pour water while drilling to cool the step drill. Drill holes in plastic, copper, aluminum and many other sheet metals, but not suitable for stainless steel. Specifications: Inseam Length: 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm, 32mm, 35mm. Material: HSS Package Contents: 1-Step Drill Bit.