5pcs fully ground HSS twist drill bits black oxide

5pcs fully ground HSS twist drill bits black oxide surface

The 135 degree split point of the HSS drill bits starts on contact in all types of metal, no walking or skating.

Fully ground drill bits body, black oxide for the most accurate hole dimensions and high concentricity.

Hardened high speed steel body for the drill bits, which can provide addtional safeguard.

The fully ground drill bits are used for general using in steel, cast steel, malleable iron, sintered metal,non-ferrous metal and plastic.

5pcs fully ground HSS twist drill bits set

Specifictaion:4,5,6,8,10mm

Black oxide surface

Fully groudn body

Plastic box package