3PCS Metal Step Drill Bit Set, 4-12/20/32mm Metal Step Milling Cutter, Triangular Conical Titanium HSS, Hex Shank for Steel, Wood, Brass, Aluminum, PVC, Center Punch and Torsion Drill Bit Included

HIGH QUALITY】: Classic high-speed steel with a titanium coating on the surface, offering proven performance and durability for drilling holes in plastics, wood, aluminum, copper, stainless steel, and many other types of sheet metal. Titanium alloy drill bits are particularly suitable for machining copper and aluminum parts, die steel, spring steel, cast iron, iron, and other metallic materials. 【PRECISE POSITIONING DRILL BIT】: When pressed against the surface, it generates a powerful, spring-loaded, automatic impact force, and an adjustable cap allows you to regulate the impact force. The knurled surface of the brass body provides excellent grip, ensuring precise positioning without worrying about deviations. 【EASY DRILLING】: The twin-blade design provides faster, smoother drilling with low pressure and high steps, eliminating stagnation and resistance, and offering superior speed and accuracy. 【LASER ENGRAVING】: The size is laser-engraved into the metal, ensuring it won't wear down even with repeated use, facilitating precise drilling. WHAT YOU GET: 1 x Nylon Bag, 1 x HSS Step Drill Bit 4-12 mm, 1 x HSS Step Drill Bit 4-20 mm, 1 x HSS Step Drill Bit 4-32 mm, 1 x Automatic Center Punch, 1 x Twist Drill Bit