The revolutions per minute (RPM) of an angle grinder (bulgarkė) are very high, so the hole is drilled instantly.
If you are planning to work with a larger quantity of dowels, then this is an essential tool for you.
The thread size of the angle grinder is M14 (most commonly found in Lithuania).
Suitable RPM is up to 10,000.
Here is a video for comparison with a drill using the same flap disc and an angle grinder: