3x Multiple Hole Stepped Up Bits Wood/Metal Hole Opener For Sheet

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High-speed steel pedal drilling is of higher quality and durable than twisted drilling.
These drill bits are perfect for creating smooth, clean and round holes. Suitable for perforated metal, , aluminum, brass, wood, plastic, etc.
This drill set includes 3 sizes (3-12mm, 4-12mm, 4-20mm) to meet your different needs.
Black is not a color treatment, but a nitriding treatment to increase hardness and wear resistance.Size Chart:3-12mm Total Length: 65mm/2.56inch
4-12mm Total Length: 73mm/2.87inch
4-20mm Total Length: 77mm/3.03inchPackage Includes:3 Pieces Step Drill Bit SetNote: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!cone drill bit;Step Drill Bit Set with Automatic Center Punch;High Speed Steel Drill Bits Set for Sheet Metal;Multiple Hole Stepped Up Bits for DIY Lovers;Metal Cone Shank Hole Metal Drilling;Cone Triangle Shank Hole Bit Hole opener
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