Size:
1PCS: 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)--15 steps
1PCS: 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)--9 steps
1PCS: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)--5 steps

Length:
4-12mm Length: Approx 70mm
4-20mm Length: Approx 74mm
4-32mm Length: Approx 105mm

Features:

100% Brand New and High Quality
Finish: Titanium
Material: high-speed steel 4241 (suitable for use in general hardness workpieces, such as aluminum, Wood Board,plastic,sheet metal that thickness below 5MM,Cannot be used for stainless steel
Ideal for using to cut holes in a variety of materials including aluminum, Wood Board, plastic,sheet metal, PVC board, insulation board etc
Titanium coated to reduce friction and heat
No need to use the center punch, you can also drill beautiful apertures
Deburring, chamfering, and opening oval holes
Step structure, a drill can open a variety of sizes aperture
Two flute design provides faster, smoother and cleaner cuts with each step is clearly labelled with the depth diameter in steps

Package Includes
1 x high-speed Steel Drill Bit 4-12mm
1 x high-speed Steel Drill Bit 4-20mm
1 x high-speed Steel Drill Bit 4-32mm
1 x storage pouch

Note:

Due to lighting effects, monitor's brightness / settings etc, there could be some slight differences in the color tone of the pictures and the actual item

kindly reminder:

While you are at work, due to the drill in the process of high temperature,it's better to cool it with water injection, can extend the service life of the drill