10 mm would be ideal. But 13/32" will work.
A 10 cm hole is almost 4 inches ! ! - IF you meant 10mm, then that's a little over 3/8 of an inch, or 13/32 for a clearance hole.
3937 is 3937/10000. If you are converting a 10 mm whole to a fractional drill bit size you have two choices. 25/65 is a bit small or 13/32 is a bit big. If it is not a super precision part, use 13/32.
attach a 10mm socket to an electric drill and place it onto the flywheel nut. start drill while giving it a bit of throttle and it should start up.
metal drill bit has a finer point
A titanium or cobalt drill bit.
One that's too big for you to hold.
The precise shape and angles of a drill bit.
A tungsten coated drill bit.
You need a diamond tipped drill bit to drill glass or tile.
That's a pretty big drill bit, -it drills a hole just a tad larger than 3 3/8 inch wide.
That is a drill bit designed to remove partial drill bits that have broken in a hole