Features:1. Material: This Hexagonal Spiral Groove Hexagonal Cross Ceramic Glass Handle for Attachment is made of high quality cemented carbide, which is durable.2. Purpose: drilling holes for ceramic tiles, brick walls, concrete, glass, ceramics, wood, aluminum alloy, plastic steel and other materials. Suitable for ceramic, granite, ceramic tile, stone, wood, plastic, concrete walls.3. Add water to cool: while drilling continuously, add water to cool to avoid scalding the drill bit. For example: ceramic tile, vitrified tile, glass, marble, etc.4. Speed: upgrade four blades, drilling speed is fast. The helical flute reduces cutting resistance and increases drilling speed.5. Long service life: titanium coated alloy, high strength, wear resistance and long service life. Industrial-grade coated carbide tip with 4 flutes. It can be installed in electric drills and electric drills. Description:This Expanded Hexagon Spiral Notched Cross Ceramic Glass Attachment Chuck has an upgraded four-stroke, high-speed drilling. It is used to drill holes in ceramic tile, brick wall, concrete, glass, wood, aluminum alloy, plastic steel and other materials. Specifications:Material: CarbideCategory: ceramic tile glass drill bitStyle: spiral flute hex shank diameter: 6.35mmDiameter: 3,4,5,6,8,10,12mm (optional)Length: 83,87,93,99,105,115,124mm (optional)Package included:1pc. * drillNotes:1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object.