19pcs hss roll forged drill bit set packed in robust metal box

19pcs hss roll forged drill bit set packed in robust metal box

Professional HSS drill bit manufacturer in China, 20 years drill bit making experience

DIN338 HSS twist drill bit, roll forged with black oxide treated surface. 118 degree point.

The drill bits ideal for drilling holes on mild steel, copper, Aluminum, Zinc alloy etc.

Parallel shank.

Made from HSS-high speed steel.

The HSS drill bits have hot roll-forged flute with special heat treatment gives additional toughness with increase durability of the drill bit.

Specification: (1.0-10.0)x0.5mm

19pcs rolled HSS drill bit packed in robust metal box

Black oxide surface, Economical HSS drill bits set from drill bit factory directly.