HIDOTOL 115PCS Cobalt Drill Bit Set M35 HSS for Hardened Steel – Fractional 1/16 to 1/2, A to Z, Wire #1 to #60 in Indexed Metal Case

Premium cobalt drill bit set for demanding drilling tasks

Meet the HIDOTOL 115PCS cobalt drill bit set, forged from M35 cobalt high speed steel with 5% cobalt. This combination is designed to extend tool life and maintain dependable performance when advancing through tough materials. The set balances durability with precision, making it a reliable choice for busy workshops and professional projects.

Key design features work together to improve accuracy and efficiency. The 135° split point with a round straight shank helps you start holes where you intend, reducing walking and keeping your work aligned. The self-centering tip further minimizes deviation, so you can produce clean, centered holes more quickly. A fully ground twist design assists chip clearance, lowers friction, and helps keep temperatures in check during longer drilling sessions.

Versatility is a core strength of this collection. M35 cobalt high speed steel is well suited for tough, high tensile materials and is widely used for cutting hard metals such as stainless steel, cast iron, and high temperature alloys, as well as titanium alloys, hard plastics, and some woods. This makes the set a strong fit for automotive work, fabrication tasks, machine shops, and home garages that tackle challenging drilling tasks.

Contents and organization are designed with practicality in mind. The kit includes 115 pieces organized for quick access: 29 fractional sizes from 1/16 inch to 1/2 inch in 1/64 inch increments, 26 letter sizes from A to Z, and 60 numbered wire gauges from #1 to #60. All bits are kept in a sturdy metal case with a size index holder, helping you keep track of your tools and speed up setup between jobs.

In short, this HIDOTOL cobalt drill bit set offers durable materials, precise starting points, efficient chip clearance, and thoughtful organization. Consider it for projects where reliable performance and orderly storage can make a meaningful difference, while keeping expectations grounded in the kit’s documented capabilities.