1. Package include 6 pieces drill bits with different sizes, you can use different sizes according to your needs.
2. Made of high quality carbide, more durable, stronger hardness and wear resistance than ordinary alloy materials.
3. The design of triangle shank makes the electric drill clamped more firmly and and prevent from slipping, fit for most hand electric drills.
4. Adopts spiral slot design, makes the drill bit smoother, easy to position and conducive to fast drilling, fast removal of thread chips, improves the efficiency of drilling.
5. Suitable for drilling holes in most materials, such as Iron, copper, aluminum, concrete, wood, plastic, brick, marble or granite,etc.
Quantity: 6 pcs
Material: Hard Alloy
Size: 4mm/5mm/6mm/8mm/10mm/12mm 4mm and 5mm are with the round shank, others are with the Triangular shank