Viking® Ultra Bit™ Type 78-UB Size 3 9 Hole 1/4"- 3/4" Step Drill Bit with 1/16" increments includes 3/8" multi-diameter 3-flat shank. It features radial flute and special axial design for speed work piece penetration. Drill bit has 5/32" step thickness and features 135 deg self centered split point. It easily starts without pilot hole and features dual flute construction that helps to drill accurate holes in thin materials. It is ideal for rigid plastics, wood and composite materials.
Features
Special axial and radial flute design speed work piece penetration
Dual flute construction drills clean accurate holes in thin materials, quickly and easily
When drilling steel with 1/8" or greater thickness, a starter hole of the smallest step diameter will speed the drilling process
