Material: The glass drill bit is made of cemented carbide, and its hardness is higher than the ordinary drill bit. The cutting resistance is small and the drilling EFFICIENCY is high. Packing Included: Drill bit set with 9 different sizes 3mm 4mm 5mm 6mm 8mm 10mm 12mm 14mm 16mm. Tile drill bits are suitable for Ceramic, Tile, Mirror, Wood, Porcelain, Brick Wall, Glass，etc. Please try to keep the drill vertical and use WATER or COOLANT for lubrication when drilling! Opening Neat-Smooth: No broken edge, no tremor phenomenon, incision resistance is small AND the hole speed is very fast, easy chip evacuation and so on .It’s easy to decorate after drilling the hole. High HARDNESS, more DURABLE and LONGER SERVICE LIFE. Note: Please don't use with hammer drill or use it on hard materials. Specifications:
Material: high quality carbide, strong toughness and wear resistance
Sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm

Features:
Surface plating treatment, which is well protected against rust. Strong toughness and wear resistance, applicable to ordinary hand electric drill or bench drill.
Carbide Tip Drill Bit is suitable for drilling in Ceramics, Tile, Mirror, Wood, Porcelain, Brick Wall, Glass, etc
It has 9 different sizes (3mm 4mm 5mm 6mm 8mm 10mm 12mm 14mm 16mm) in one set, which meet your different needs perfectly.

Special Note When Using the Drill Bit：
Do not use impact mode of drills or hammers when use the Drill Bit.
The drilling speed of the Drill Bit should be slow, especially in the beginning of drilling.
Please try to keep the drill vertical and use WATER or COOLANT for lubrication when drilling.

Packing Included:
9 x Glass Drill Bit