That is a drill bit designed to remove partial drill bits that have broken in a hole
metal drill bit has a finer point
A titanium or cobalt drill bit.
It's very easy if you have a drill bit and a bit of patience.
A diamond core drill, slow and easy, with plenty of water.
A tungsten coated drill bit.
The precise shape and angles of a drill bit.
You need a diamond tipped drill bit to drill glass or tile.
Purchase the appropriate sized easy out and drill bit from an auto parts store and drill into the center of the bolt head, you then insert the easy out and its reverse threads will back the bolt out. ( as you tighten the easy out counterclockwise the bolt will loosen )
You can drill holes in aluminum with a drill as long as you have the proper drill bit. Use a regular drill bit and keep speed moderate.
That size is 8-32. The drill bit for a clearance hole is 11/64, or a #17 drill bit.
Surprisingly enough- a 6 mm drill bit, or if you don't have one,1/4 drill bit will do.
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