HSS Step Drill Bit, Double Slotted Conical Milling Cutter, 5-35mm, 13 Steps, Round Shank, Step Drill Cut Holes Tool for Screwdriver, Drilling on Steel, Brass, Wood, Plastic

PERFECT SIZE: For precise drilling of various sizes from 5-35 mm in diameter, one drill bit can handle holes of different sizes. QUALITY MATERIALS: 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 processing copper and aluminum parts, die steel, spring steel, cast iron, iron, and other metallic materials. LASER ENGRAVING: The size is laser-engraved into the metal, so it won't wear off even with repeated use, making precise drilling easier. EASY TO DRILL: The marking hole position and double-flute design make drilling faster, smoother, and more precise. PRECISE POSITIONING DRILL BIT: When pressed against the surface, it produces an automatic, high-impact, spring-loaded striking force, and an adjustable cap allows you to regulate the impact force. The knurled surface of the HSS body is highly non-slip, providing precise positioning points without worrying about deviations. Features: No need to use a center punch; unlike ordinary drill bits, it is not easily broken. With just a small amount of pressure, it automatically burrs holes as you drill. Provides fast, smooth, and clean cuts; each step is clearly marked with the diameter and depth. Specifications: Material: HSS Steel with Titanium Plating; Shank Type: Round Shank; Color: Silver; Models: 5-35mm; Shank Diameter: 13mm; Hole Sizes: 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm, 32mm, 35mm (13 steps); Length: Approx. 7.2cm / 2.7"