Description:
These Double-Fluted Step Drill Bits provide faster cutting and drilling than single flute bits. The easy-to-read step markings and targets save time when drilling holes. Thick 3/8 hex shank provides a firm, positive grip and wont spin out in the drill.
Two flutes cut faster and keep bit cooler
Fast-starting, non-walking drill tip
High-visibility silver targets for primary hole sizes
Thick 3/8-Inch hex shank wont round out in the drill chuck for a more positive grip
3 hole sizes(7/8,1-1/8,1-3/8)
Features:
1: Suitable for Aluminum, insulation board, PVC board chamfer,steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.
2: Made of HSS 6542 material, far better than 4241.
3: 118° X Bit Design, you can drill from any angle, no slipping.
4: Triangle shank, fit for most drill chuck and no slipping.
5: Can drill 5mm thickness material.
6: One drill bit contain lots of sizes diameter.
