99Pcs Drill Bit Set High-Speed Steel Drill Bits For Steel Plate Wood Plastic Metal Copper Alloy Woodworking Hole Opener ,Safety and Durable

1. Drilling can be started easily without pre-drilling. Drilling speed is fast and friction is extremely low 2. It is widely applicable to all kinds of metals, plexis and hard plastics 3. It is very suitable for home diy and general construction and engineering 4. Use with needle vice or low-speed drill (not applicable to impact drill 5. Application: High speed steel drill bit set for wood, plastic and aluminum. for diy, home and general building/engineering use