MACXCOIP Cobalt Drill Bit Set, 115Pcs – M35 HSS for Hardened Metals

Overview

The MACXCOIP Cobalt Drill Bit Set is built around an M35 cobalt alloy and packed with 115 pieces designed to tackle hard metals and a range of common materials. The bits are sharpened and polished for consistent cutting, helping you move through stainless steel, cast iron, copper, aluminum, plastics, and wood with confidence. This kit emphasizes precision, durability, and organization, making it a versatile addition to serious DIY projects and professional workshops alike.

What’s inside and how it’s organized

• 115 bits across three size families: 29 fractional sizes from 1/16" to 1/2" in 1/64" steps; 26 letter sizes A–Z; 60 numbered sizes #1–#60.
• Metal index storage box with dedicated holders keeps each bit in its place for fast retrieval.
• Hardened and polished inserts help maintain edge sharpness for precise cuts, reducing the need for frequent resharpening.

Key performance features

• 135° point tip and twist geometry deliver quicker cutting and a clean start, while the self-centering design helps prevent wandering.
• The M35 cobalt composition enhances durability when drilling through hardened or tough metals, along with compatibility with plastics and softer materials.
• Jobber-length design balances reach and rigidity, supporting a range of drilling tasks from simple pilot holes to deeper cuts.

Real-world use and potential benefits

In practice, you’ll notice the kit’s wide size range supports quick hole-size selection without swapping bits often. The combination of sharp edges and a robust point minimizes dwell time and helps you achieve consistent hole diameters across different materials. While results can vary by material and drill technique, users often experience smoother starts, cleaner holes, and reduced bit wobble on challenging workpieces such as stainless steel panels or aluminum components.

Portability and organization are additional advantages. The metal index storage box locks the bits into clearly labeled pockets, making it easier to plan a project, lay out tools, and transport the set between tasks. For ongoing projects or frequent shop-to-site work, the compact packaging helps keep the collection together without clutter. This kit is designed to support a broad spectrum of tasks, from metal fabrication and repair to woodworking and light plastic drilling, with a focus on reliable performance and practical usability. It is an option to consider when you want a comprehensive, ready-to-go set that covers a wide range of hole sizes and material types without entering a different grade of tooling.

Who this is for

Ideal for metalworkers, hobbyists, and DIY enthusiasts who need a complete, organized set to handle daily drilling tasks across various materials. The combination of M35 cobalt bits, a diverse size range, and a sturdy storage box helps users approach projects with confidence while keeping a clean, efficient workspace.