Heavy Duty Four Spiral Flute Step Drill Bit Set For Metalworking In M35 Cobalt High Speed Steel, Impact Ready, 1/4 Inch To 1-3/8 Inch (19 Sizes), Includes 3/8 Inch Three Flat Shank Bits For Hole Cutting On Steel And Aluminum By Panovos

Premium M35 Cobalt Step Drill Bits for Metal
✔️ M35 cobalt steel for tough durability, 19 sizes from 1/4 to 1-3/8 inches, four spiral flutes for fast, smooth cuts

This step drill bit set is a go-to tool for drilling precise holes in metals like steel and aluminum, as well as wood and plastics. It's commonly used in metalworking shops, home DIY projects, and auto repairs where you need quick, adjustable hole sizes without changing bits.

✅ Made from M35 cobalt high-speed steel for superior wear resistance and heat tolerance
✅ Includes 19 step sizes ranging from 1/4 inch to 1-3/8 inch for versatile drilling needs
✅ Features four spiral flutes for faster cutting and efficient chip removal
✅ 135-degree tip angle for better penetration in hard materials, plus a 3/8-inch three-flat shank for a secure grip
✅ Designed for use on stainless steel, aluminum, and more, with recommendations for cooling to extend tool life

💡 Why are cobalt steel drill bits a smart pick for working with tough alloys? Here's a quick overview: Cobalt steel steps up the game for drilling durability. - Offers high resistance to heat and wear in demanding jobs - Delivers smoother cuts on hard metals like stainless steel - Extends tool lifespan with proper cooling techniques - Provides reliable performance for pros and hobbyists alike