Viking SP-60 Type 240-UB 60 piece Jobber length Number Drill Set features bit sizes #1 to #60. Drills feature a 135° Split Point for fast penetration and easy starting without the use of a center punch or pilot bit. Black and Gold surface treatment provides additional lubricity, reduces wear and assists swarf in traveling along the flutes with less resistance as it exits the hole during drilling. These quality bits are highly recommended for use in work hardening grades of stainless steel and other tough and hard metal drilling applications. Bits are of one piece solid construction, and are manufactured in the USA of special Hi-moly tool steel. Set includes every number size from 1 to 60 and a metal index storage case.