Easy to install, convenient to use, and widely applicable
Features:
100% Brand New and High Quality
Made from high quality HSS steel
Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.
Titanium coated to reduce mit and heat
Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.
3 sided shanks design in order to prevent slippage when in chuck
Two flute design drives faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps

Length:
3-12mm Length: Approx. 7.9cm/ 3.11"
4-12mm Length: Approx. 6.7cm/ 2.64"
4-20mm Length: Approx. 7.4cm/ 2.91"
The Cutters Come in the Following Sizes:
3-12mm(3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm) 10 Steps
4-12mm: (4mm, 6mm, 8mm, 10mm, 12mm) 5 Steps
4-20mm:( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)9 Steps

Package included:
4 x Drill Bit 3-12mm
or
4 x Drill Bit 4-12mm
or
4 x Drill Bit 4-20mm