AIMLENTOOL Cobalt Step Drill Bit Set, Hex Shank Step Drill Bit with Automatic Center Punch for Metal, Stainless Steel, Aluminum, Wood, and Plastic, Storage in Aluminum Case for DIY Lovers, 50 Sizes

Features

• M35 Material: Our M35 cobalt step drill bits, fortified with a titanium coating that makes the drill bit harder than a typical HSS bit, can reduce the friction drill, and perform well in heat, corrosion, and rust resistance.
• Spiral flute design: The spiral flute design prevents metal chips from flying and removes chips faster, allowing for smoother drilling without overheating. Promotes cleaner, more precise drilling operations.
• Wide application: Our step drill bits can process holes of different diameters and can be used in heavy metal, iron, aluminum, brass, plastic, aluminum alloy, wood, plastic, etc., and can also be easily and securely installed into all power tools.
• Size: Hex shank step drill sizes include 1/4-1-3/8, 3/16-7/8, 1/4-3/4, 1/8-1/2, 3/16-1/2 , with popular sizes needed for daily use, it can basically meet the needs in life and has greater convenience.
• After-Sales Service: The Aluminum storage box for stepped drill bit is sturdy and easier to carry and store. If you are not fully satisfied with our product for any reason, please contact us.