SEDIANAS Cobalt Drill Bit Set 29Pcs M35 HSS (1/16 to 1/2 inch) | Hardened Metals, Stainless Steel, Cast Iron

Overview

Introducing the SEDIANAS Cobalt Drill Bit Set, a 29-piece collection designed to tackle hard-to-drill materials with clarity and control. Crafted from M35 cobalt high-speed steel, these bits resist heat and stay sharp longer, helping you complete projects more smoothly. A durable metal index storage box keeps sizes organized so you can move from one task to another without digging through drawers.

Why choose cobalt for tough materials?

The cobalt formulation adds heat resistance and durability, making these bits well suited for frequent drilling into hard metals and plastics. The balanced geometry, combined with robust steel, supports reliable starts and consistent results across a variety of tasks.

What you get

• 29 pieces ranging from 1/16 to 1/2 inch to fit a wide range of hole sizes.
• M35 cobalt HSS construction for improved heat resistance and longer tool life under demanding tasks.
• 135 degree split point with round straight shank for self-centering and reduced walk-off.
• Fully ground twist design that helps chip evacuation and lowers heat during drilling.
• Includes a drill bit holder with a size index for easy storage and fast size selection.

Practical uses and expectations

• Ideal for home workshops, automotive work, and hobbyist metal projects where durable bits save time and effort.
• Performance possibilities include efficient drilling through hardened metals, stainless steel, cast iron, and tough plastics, with clean starts on wood.

Note: Results vary by material and technique. The set offers a range of sizes and construction designed to support versatile drilling tasks while helping to extend tool life by resisting heat and wear.