3PCS Step Drill Bit Set – Titanium Coated HSS Multi-Step Bits (3–20mm) for Wood, Aluminum, Plastic – 6.35mm Hex Shank for Power Tools

• MULTI-SIZE STEP DESIGN FOR PRECISE HOLES – Includes 3 titanium-coated step drill bits with varying diameters: 3–12mm (15 steps), 4–12mm (5 steps), and 4–20mm (9 steps)—perfect for drilling clean, burr-free holes in one pass without switching tools.
• HIGH-SPEED STEEL + TITANIUM COATING – Crafted from durable HSS steel with a gold titanium nitride coating to reduce friction, resist wear, and maintain sharpness—ideal for frequent use on wood, aluminum, plastic, and thin metal sheets.
• HEX SHANK FOR SECURE FIT – The standard 6.35mm (1/4") hexagonal shank ensures a tight grip in cordless drills, impact drivers, and drill presses, preventing slippage and delivering consistent torque during operation.
• DUAL STRAIGHT FLUTES FOR EFFICIENT CHIP REMOVAL – Designed with dual straight flutes that efficiently eject debris, reducing clogging and ensuring smooth, uninterrupted drilling—even in tough materials like stainless steel or PVC.
• VERSATILE USE ACROSS MATERIALS – Ideal for woodworking, automotive repair, DIY projects, and home improvement. Drills cleanly through plywood, aluminum up to 2mm, plastic boards, drywall, and other soft-to-medium density materials.

Maximize your drilling efficiency with this 3-piece step drill bit set—designed for precision, durability, and multi-material performance. One Bit, Multiple Hole Sizes: Replace dozens of standard drill bits with just three. Each stepped bit features clearly marked diameters (e.g., 3–12mm, 4–20mm), allowing you to create accurate holes from small pilot sizes to larger openings in one smooth motion. Engineered for Longevity: Made from high-speed steel (HSS) and finished with a hard-wearing titanium nitride coating, these bits stay sharper longer, run cooler under load, and resist chipping or dulling—even after extended use. Secure & Stable Operation: The 6.35mm hex shank fits all standard power tool chucks, providing a firm connection that prevents wobbling or slipping—ensuring stable drilling at high RPMs. Smooth Chip Ejection: The dual straight flute design effectively removes swarf and debris, minimizing clogging and heat buildup, so you can work faster and more efficiently. Perfect for DIY & Professional Use: Whether you're installing shelves, modifying car panels, or crafting furniture, these bits deliver clean, deburred holes in wood, aluminum (≤2mm), plastic, PVC, and drywall—no secondary filing required. Specifications: Material: High-Speed Steel (HSS) + Titanium Coating Shank Type: 6.35mm (1/4") Hex Bit Sizes: 3–12mm (15 steps), 4–12mm (5 steps), 4–20mm (9 steps) Package: 3 x Step Drill Bits A smart, space-saving solution for every DIYer and tradesperson who values speed, precision, and reliability.