A reamer generally can't start a hole, only enlarge one already made.
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metal drill bit has a finer point
A titanium or cobalt drill bit.
Drill bits and screws are not the same and cannot be converted. vido produces drill bits with high quality, exported overseas and loved by the public. If you want to buy a drill, you can go to VIDO's official website to check.
First of all, the drill bit is not considered a lever. The drill bit is, however, considered a ramp or inclined plane.
It is the angle between the cutting edges.It is usually 118 degrees