7 PCS This step drill bit set has 5 different sizes to meet requirements: 4-12mm / 3-13mm / 4-20mm / 5-35mm / 4-32mm. The dimensions are laser etched into the metal so that the holes can be drilled accurately even during prolonged use.
Reliable Material: 4241 high speed steel, titanium coating reduces friction when cutting, easily cuts 1-5mm steel plates, aluminum plates, copper plates, plastic and wood plates and many other types of metal plates .
Automatic Centering Seal: Built in spring, the seal can be automatically retracted to increase directional effect. The markers have a certain directional effect on drilling holes and can be used with step drills.
Construction Features: X-shaped drill bit and double groove design ensure faster and smoother cutting and prevent cutting waste. Triangular shank design prevents the chuck from slipping.
What's in the box
1 x 7PCS Step drill bit set
