High Speed Steel Conical Step Drill Bit Straight Grooves

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Description:

Durable: This is to ensure they don’t wear out even after being put to use repeatedly, make precise drilling easy.
Easy to Drill: Through the surface depth gauge, drilling becomes very precise and accurate. Quickly removes chips and deburrs the hole, the pressure is small, drilling and cutting are faster and smoother. High temperature will be generated in , and water or coolant needs to be added to cool the drill bit.
Top Quality Material: This step drill bit is made of high speed steel material, which has high wear resistance, high toughness and high strength flexibility. Titanium coated to reduce friction and heat, makes the durable and longer lasting.
Compatible models: Suitable for electric drills, hand drills, bench drills, etc. The larger the diameter of the hole that needs to be opened, the lower the rotating speed of the electric drill, and the recommended rotating speed is within 1000RPM.
Wide Usage: This drill bit is used to cut thin iron plate, aluminum material, thin iron, wood board, copper plate.Thickness within 5mm. Not suitable for carbon steel, stainless steel and ceramic. Note: Please use in the specified plate to avoid damage to the drill.

Size Chart:

3-12mm Total Length: 6.7cm/2.64inch,Diameter: 4.7cm/1.85inch
4-12mm Total Length: 7.2cm/2.83inch,Diameter: 4.2cm/1.65inch
4-20mm Total Length: 7.4cm/2.91inch,Diameter: 4.8cm/1.89inch

Package Includes:

1 Straight Grooved Step Drill Bit

Note:

Please allow 1-3mm measuring deviation due to manual measurement.
Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!

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