HSS twist drill bits for metal, made of high speed steel, and wear well from professional treated.
Face treated by special technic to prolong use life. With flip-up metal storage case.

Included:1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10mm