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15 pieces of high speed steel drill bits. ... Product Name: PCB drill bit 10pcs Brand New Unused Carbide ... Stainless Steel. Cobalt. ...
Cobalt drill bits are excellent for drilling through hard metals like stainless steel or cast iron, however are often used for softer materials because of their durability and longer life. Cobalt drill bits are made with 5 to 8 percent cobalt and are designed to increase steel strength and give it a better heat resistance.
Find great deals on eBay for diamond drill bits for steel. Shop with confidence.
MOHOO 50PCS 1/1.5/2/2.5/3mm HSS Shank High-Speed Steel Mini Drill Bit Set Editor Rating: Whenever you are working with metals, one thing to keep in mind is that bits will wear down and potentially break over time.
HSS bits with a coating of a titanium compound are more durable and harder than HSS bits, and suitable for drilling hard materials, e.g. stainless steel. In practice though, the titanium coating eventually wears away, and if you sharpen them with a drill bit sharpener or by hand, the coating is totally lost.
When working on any type of machinery, whether it is a car, boat or old washing machine, there is the chance of encountering a broken stainless-steel bolt.