11PCS Masonry Drill Bit for Pots Bottles Ceramic Tile Glass Brick 3/16 to 1/2 inch Ceramic 1/4" Hex Shank Carbide Tips Concrete Drill Bit Set

Product description 10PCS Masonry Drill Bits with 60mm Extension Multi-material masonry drill bit set for drilling in tile, glass, concrete, brick, wood, and plastic.

The extension drill bit can quick change and release system allows you to quickly install, lock and unlock ceramic tile drill bits easily Extension bits fits for power driver, drill and handheld screwdriver which is 1/4" hex shank (6.35mm) Concrete drill bit set can be installed on various ordinary drills such as electric drill, hand drill and bench drill The hex shank glass drill bits is designed for anti rust,wear-resistant and corrosion resistance to last long life.

The twist ceramic tile drill bit comes with case to easy to storage and portable for our work and project Do not use impact mode of drills or hammers when use the drill bit sets.

Drilling speed of the cement drill bits should be slow, especially in the beginning of drilling.

Please try to keep the porcelain tile bits vertical and use WATER or COOLANT for lubrication when drilling.