This drill bit set can easily penetrate various materials such as glass, ceramic tile, marble, wood, travertine, ceramic, stone, concrete, brick, hard plastic, and cement.

This set includes 10 Pcs masonry drill bits of 3mm, 4mm, 5mm, 6mm, 6mm, 6mm, 6mm, 8mm, 10mm, 12mm.

Yes, this drill bit set is suitable for most general drill, electric drill, hand drill and bench drill.

This drill bit set has a high quality drill bit and industrial strength carbide drill bit tip, excellent abrasion resistance, a double U type groove slot design for fast drilling dust remove, and 3 flats shank allows drill bit easy plug and to be held tightly.

Yes, this drill bit set comes with a worry free guarantee. If you are not satisfied, we will offer an exchange or refund with no questions asked.