I needed a strong drill to drill through a 1/2 inch screw. I've done a little research on tungsten and while tungsten is strong it can break easily so proper handling of this drill bit is crucial. After forgetting these bits, I only managed to break two from mishandling and surprisingly the bits just didn't wear out on me. I was able to finish my project (that was my last hope) and it worked! The bits were smaller than I thought but turned out to be very strong and wear resistant
Kutzall Original Cylinder Rotary Burr, 1β8" Shaft, Fine - Woodworking Attachment For Dremel, Foredom, DeWalt, Milwaukee. Abrasive Tungsten Carbide, 1β8" (3.1Mm) Dia. X 7β8" (22.2Mm) Length, C-18-EG
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