The combination of a middle drill and chamfering cutter allows you to simultaneously machining the drill hole and 90 degree chamfering with a single drill. ● Using high speed steel (HSS) means less wear on the drill and can be used for a longer time. If the medium drill wears out, you can easily replace it with the included L-shaped wrench. The medium drill has an X-shaped thinning process for excellent adhesion and a good discharge of the cutting at the tip to extend the life of the drill.
●鉄工·木工·アルミニウムの下穴あけと面取り用ドリル