ITEM NAME:10Pcs 3mm 4mm Spear Head Ceramic,Porcelain,Marble,Drill Bit Glass Tile Description: Made of cemented car.Suitable for opening a hole on ceramic glass, glass, granite, brick wall, ceramic tile, and other brittle material. The drill bits can be installed on the electric hand drill, drill machine. For security, the user should wear protecting glasses or protecting mask when using the drill bits.
