High speed steel step drills allow for drilling multiple hole sizes with one bit. Specially designed to automatically debur holes as it drills. A balanced double flute design minimizes chattering. This tough tool is suitable for all standard industrial material: nonferrous metal, special steel, thermoplastics and duopolistic. This durable and versatile tool will center, spotdrill, bore and debur-all in one smooth, hiperformance working cycle Titanium coated step drills are designed to handle repetitive drilling in metal, wood, plastic and PVC. The titanium coating is engineered to last six times longer than standard high speed steel bits.

 

4 PCS COMBINATION DRILL SET

HSS, Titanium coated

In wooden case

Specification

1 pc countersink 12.4mm  

1 pc step drill 4-12mm

1 pc drill saw 6mm  

1 pc umbrella drill 8-20mm

 

 

3-PCS

Contents:

• 4-32mm, 15 steps

• 4-22mm, 10 steps

• 4-12mm, 5 steps

• Aluminium case packing