New Set of 10 #77 HSS Wire Gauge Twist Drill Bits For Metal Working & Drilling
The Revive & Restore Jewelry Kit is a valuable tool for anyone in need of jewelry repair. This kit includes a set of 10 #77 HSS Wire Gauge Twist Drill Bits, perfect for metal working and drilling. These drill bits are designed to withstand excessive heat build up, ensuring that they will not lose their hardness over time. With a 1/16" shank and a diameter of 0.42mm, these drill bits are ideal for drilling ferrous metals, tough casting sand forgings, and even hardened stainless steel. Packaged in a convenient plastic tube, this kit is a bargain for those looking to revive and restore their jewelry.
These will not lose their hardness with excessive heat build up.
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