Features:
*Made from high quality HSS steel.
*Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.
*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.
*3mm Drill is high-speed steel after nitriding, with higher hardness. Use a drill to drill the hole before drilling can be more efficient.
*Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling.
*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
Specifications:
Product Name: Step Drill Bit
Material: HSS
Color: Black, Silver
3-12 speed:260-400
4-12 speed:260-400
4-20 Speed:180-240
3-12mm Length: Approx. 7.9cm/ 3.11"
4-12mm Length: Approx. 6.7cm/ 2.64"
4-20mm Length: Approx. 7.4cm/ 2.91"
Suitable for: Deburring, Chamfering, Cutting or expanding holes
Supporting tools: Pistol drill, Hand drill, Charging drill, Bench drill
Quantity: 4Pcs/Set
Package Included:
1 x Drill Bit 3-12mm
1 x Drill Bit 4-12mm
1 x Drill Bit 4-20mm
1 x 3.0mm Drill Bit
1x Bag
Note:
1.Transition: 1cm=10mm=0.39inch.
2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
3. Please allow slight manual measurement deviation for the data.