Cobalt Drill Bits for Steel, Stainless Steel, and More

A pack of 20 cobalt metal drill bits, each measuring 5/32 inch (3.969 mm) in diameter, comes in a convenient plastic storage case for easy organization and accessibility. These industry-grade M35 High Speed Steel (HSSCO) drill bits contain 5% cobalt, making them harder and more wear-resistant than standard HSS bits. This enhanced durability allows them to efficiently drill through a variety of tough materials, including hardened metal, stainless steel, cast iron, plastic, PVC board, and wood.

The 135-degree split-point design of these drill bits provides superior self-centering capabilities, preventing them from wandering or walking on the surface during use. This feature ensures accurate and precise drilling, even on challenging hard surfaces. Manufactured directly by the factory, these drill bits undergo a meticulous process, including full grinding and hardening, to ensure exceptional quality and precision. The diameter accuracy is carefully controlled within a tolerance of -0.03 mm, ensuring consistent and reliable performance.

Backed by a commitment to customer satisfaction, the manufacturer stands behind these drill bits with a full refund or replacement guarantee should any issues arise. This level of quality and support demonstrates the confidence the brand has in the performance and durability of these cobalt metal drill bits.

Whether you're a professional tradesperson, a DIY enthusiast, or someone who values reliable and high-quality tools, this 20-piece set of 5/32-inch cobalt drill bits is an excellent choice. The combination of enhanced hardness, wear resistance, and self-centering capabilities make these drill bits a versatile and dependable addition to any toolbox or workshop.

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