MACXCOIP Cobalt Drill Bit Set, 13-Piece M35 HSS, 1/16"–1/4

The 13-size assortment gives you a choice of bit diameters for different drilling tasks, from 1/16" through 1/4". M35 cobalt HSS construction and a 135-degree point make this jobber-length set suitable for work across hardened metal, stainless steel, cast iron, wood, and plastic.

A size-indexed storage case keeps the bits organized, so you can identify the diameter you need and return it to its place after the job. The set brings a range of common sizes together rather than relying on a single bit for every hole.

Usage tips

Choose the bit size that matches the hole you need, then select from the materials this set is intended for, including hardened steel, stainless steel, cast iron, copper, aluminum, wood, and plastic. The 135-degree point and twist-flute design are intended to support centered drilling and chip removal as you work.

Keep the bits sorted in the indexed case between tasks. That makes the size markings easy to scan when you move between different hole sizes or materials, and helps keep the assortment together in a workshop or tool drawer.

Why it makes sense

A single-size bit handles one diameter, this set covers 13, including 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", and 1/4". That range is useful when a project calls for several hole sizes or when you want the next size ready without buying bits individually.

The M35 cobalt HSS construction is intended for drilling harder materials as well as softer metals and nonmetal surfaces. A straight shank and spiral flute design round out a practical format for general drilling jobs, while the storage case makes it easier to keep the set organized between uses.

Worth noting

The set combines metal-focused capability with a range of everyday materials, so it can serve in jobs that move between metal, wood, and plastic. Buyers describe positive cutting performance on harder materials and mild steel, while feedback on durability is mixed: some report bits snapping quickly. Comments on sharpness, quality, and ease of use also vary. Treat those comments as individual experiences, and choose the appropriate bit size for each task.

Before you decide

What sizes are in the set? It includes 13 diameters, from 1/16" to 1/4": 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", and 1/4".

What materials can these bits be used on? They are listed for hardened metal, stainless steel, cast iron, copper, aluminum, wood, and plastic, among other metal and plastic surfaces.

How do you keep the sizes organized? The included case has size indexes, making it easier to locate a diameter and put the bit back in its designated spot.

Final verdict

For workshop tasks that call for several hole diameters across metal, wood, or plastic, this MACXCOIP set brings 13 M35 cobalt HSS jobber-length bits and an indexed case into one organized assortment. It is a useful fit when having multiple sizes on hand matters as much as keeping them easy to sort and find.