10 Pcs 4mm Tungsten Carbide Drill Bit Spear Head with Hex Shank Glass Ceramic Cross Spear Head for Mirror Porcelain Marble

• High-Quality Cemented Carbide. With an enhanced head, it can prevent the drill bit from cracking and prolong its service life.
• Pear-Pointed Tip Design. With strong toughness and wear resistance, solve the problem of drift and slippage of the drill bit.
• Lance cemented carbide can speed up the cutting speed and avoid tile cracking.
• Small cutting resistance, improve the trepanning speed, save time.. This drill bits will drill without chipping or cracking when properly used.
• Multi-function drill bit kit. Used to drill glass, tile, porcelain, ceramic and other hard fragile materials. Ideal for wood, metal, plastic, cement and other fragile materials.

Features: Spear-pointed tip design reduces breakout and the bit features a carbide tip. Used to drill glass, tile, porcelain, ceramic and other hard fragile materials. Spear point carbide for fast cutting speed and extra cutting life. Small cutting resistance, improve the trepanning speed. This drill bits will drill without chipping or cracking the material when properly used. Specifcations: Material: Carbide Color: Gold Shank Diameter: Approx. 6mm Total Length: Approx. 72mm Usage: Masonry Drilling Head type: cross spear head/flat spear head Bit type: tile & glass drill