13pcs tin-coated HSS twist drill bit set

13pcs tin-coated HSS twist drill bit set

High speed steel body drill bit

Hot-rolled flute with sharped cutting edge, give the drill bit additional toughness and sharpness

Drill bit has 118 degree point angle design for general purpose

Polished flute for the most accurate hole dimensions and high concentricity

Titanium nitride coating ensure longer using life.

For drilling in steel, cast steel, malleable iron, sintered metal, non-ferrous metal and plastic

Specification:2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8mm