The HSS Front Sight Dovetail Cutter is designed for installing special handgun front sights from manufacturers like Jim Clark, Ed Brown, and Bob Marvel.
The cutter is slightly undersized at .300" diameter to allow for precise fitting and to compensate for machine wear, and it should only be used in a milling machine.
It has a 65° shoulder angle and a maximum speed limit of 700 rpm to prevent breaking the teeth.