1Brand new and high quality. 2Forged with high quality 9341 steel, head quenching heat treatment, high hardness and good wear resistance. 3Reasonable 38 large vortex angle design, increase chip flute, smooth and flat high temperature resistant non-stick knife 4The 135 degree drill tip double back angle design dyeing head is sharper, precision grinding technology, good wear resistance, and durable. 5The 1/2 handle round handle is chamfered and clearly marked with a steel stamp. The diameter of the drill bit can be distinguished when it is convenient to use.
