E7CB 10Pcs Carbide Drill Bit Set for Ceramic Tile Concrete Glass Marble Wood Triangle Porcelain Metal BitsOOTDTY Feature:Made of cemented carbide material, with high hardness and wear resistance, can be used for a long time. The spiral twist shaft increases material removal to leave cleanly drilled holes, it also brings fast drilling dust to remove, and the 3-shank flats allows the drill bit to be easily connected and which will hold tight.10 pieces in 7 different sizes to meet different hole depth and width. Suitable for most bench drill, electric drill, and drill with drilling function. Widely used for bricks, blocks, stone, light concrete, ceramics, hardwood board, glass, marble materials, etc. Specification: Material: cemented carbideSize: 3mm,4mm,5mm,6mm,6mm,8mm,8mm,10mm,10mm,12mm Length: 80/81/82/100/112/115/126mm Color: As pictures shown Quantity: 10pcs/setNote: No retail package. Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 10 x Drill Bits (Other Accessories Demo in the Picture Are Not Included)