Qibaok Step Drill Bit Set with Automatic Center Punch, 3 PCS HSS Titanium Hex Shank Step Cone Drill Bits for Plastic, Wood, Aluminum, Metal Sheet, Metric 4-12/4-20/4-32mm

Feature

🔧Material HSS 4241 & classic high speed steel with titanium coating for strength and longevity.
😀Package 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) + 1 Automatic Center Punch.
🔧Easy Drilling Two-fluted design provides faster, smoother cutting, provided with small pressure and the sets. Stepped grooves prevent slippage in the chuck.
😀Wide Usages Perfect Step Drill Bits for home DIY and general building supervision / engineering use. Ideal used to drill holes in various material like iron plate, aluminum plate, wood, PVC sheet, insulation boards, etc.
🔧Guarantee & Friendly Customer Service Refund/ Replacement for ANY reasons. Any problems, please feel free to contact us Qibaok, we will try our best to help you at the first time. Happy shopping~

Description

Qibaok Step Drill Bit Set:
Sizes:
4-12mm: 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm,12mm)
4-20mm: 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm,16mm,18mm,20mm)
4-32mm:15Steps(4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)
Automatic Center Punch:
7.4 x 2.6 x 0.7 inches

Features
100% brand new and high quality.
High speed steel for longer service life.
Automatically Deburrs Holes as you Drill.
Double cutting blades design enables a faster and smoother cutting.
The sharpness and titanium coating ensure easily cut through most sheet metal,plastic and some other materials with ease.

Notice
1.When use the drills, please always wear protective goggles, mask and gloves.
2. Don't touch it with your hand as the drill will produce heat when using, there will be the danger of burning.
3.Please pay attention that the product need to be cooled by water injection when you use the product drill metal plate.The step drill is easy to become soft because of high temperature. If you don't cool the drill, it will be scrapped quickly.
4.Our drills are HSS High-speed steel 4241, you'd better not use it to drill the material that is same as our product or drill the material that the hardness is higher than our product.