Feature

●Shank Type: 6.3 mm Triangle Shank; Material: Titanium Coated High Speed Steel 4241; Drilling Diameter: 3 mm, 2.5 mm, 4.8 mm, 5.5 mm, 6.5 mm, 7 mm, 8.7 mm, 9.5 mm, 10 mm, 11 mm, 12 mm, 12.5 mm.
●These step drill bits are durable and strong enough to drill clean holes in materials such as metal and wood. It also helps to magnify existing holes to clean the edges
●Ideal for drilling holes in iron, metal, aluminum, copper, wood, plastic, PVC boards and many other types of sheets
●Suitable for handheld drilling rigs, excavators, milling machines, machine centers, metal plates, maintenance and modification, bridge doors and windows, home appliances etc
●Note: High temperature will affect the service life. To ensure the drill bit works properly, use coolant during metal drilling. Please store it properly. Do not drop bits from high places


Description

Features:

Markings make the size more clear.
High speed steel for longer service life;
Used in electric drills and drill press.
Double cutting edge design allows for faster and smoother cutting
The X-type opening is designed to facilitate removal of cutting waste during drilling.
The sharpness and titanium coating make it easy to cut most metal, aluminum, plastic, wood and other materials.


Specifications:

Surface treatment: titanium coating.
Material: High speed steel 4241
Shank Diameter: 0.25 inches (6.3 mm)
Step Quantity: 13
Total length: 3.0 inches (77 mm)
Cutting diameter: 3 mm, 3.6 mm, 4.8 mm, 5.5 mm, 6.5 mm, 7 mm, 8 mm, 8.7 mm, 9.5 mm, 10 mm, 11 mm, 12 mm, 12.5 mm.


Package Includes:

1 x Step Drill Bit


Maintenance Tips:

1. Not compatible with hammer drills.
2. It is recommended to oil the bits before each use.
3. Drill small holes to make the drill smoothly.
4. Do not set the drill speed too high to avoid damage to the blade edge.
5. The thickness of the metal sheet to drill should not exceed 0.38.
6. Check the concentration of the spindle and spring chuck and the clamping force of the spring chuck. The drill bit may be damaged and the drill hole will be too large.