Features: 1. Carbide material, features strong toughness and wear resistance. 2. Industrial grade Coated Carbide Point with 4 Cutting edges. 3. Incision resistance are small, increase the opening speed, long service life. 4. Applicable drill: Can be installed in the hand drill, electric drill, bench drill. 5. Suitable for drilling ceramics, granite, tiles, stone, wood, plastic, concrete wall. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow slight deviation due to manual measurement. Specification: Type: Ceramic Tile Drill Bits Material: carbide Color: as picture shows Compatible equipment: electric drill/hand drill/bench drill Uses: glass, ceramics, vitrified tiles, ceramic tiles, brick walls, wood, plastic Include: 6*Drill Bits (4/5/6/8/10/12mm,1pc each) Size:Working Length Shank diameter Overall length 4mm:43mm 6.35mm 76mm 5mm:43mm 6.35mm 76mm 6mm:45mm 6.35mm 77mm 8mm:48mm 6.35mm 80mm 10mm:55mm 6.35mm 83mm 12mm:55mm 6.35mm 86mm includes: 6 x drill bit(4/5/6/8/10/12mm,1pc each)