Description 3 to 12mm Triangle Twist Drill Bit Concrete Glass Ceramics Tile Marble Drill Bit Triangle ShankSpecification MaterialYG6X tungsten steel alloyBit shapeTriangleApplicationDrilling in glass ceramic tile marble concrete plastic woodMachineImpact Drill electric drillSizeDiameter mm Work length mm Total length mm Shank Dia mm Weight mm 340802 53442803 5554280486551004 51286611062710701107381275120958Features 1 Different sizes 3 12mm meet your different need 2 Made of YG6X special triangle shape bit more sharp making drilling faster and smooth 3 Will not damage the material when drilling with this triangle drill bit 4 Easy to install fit for impact drill electric drill 5 Perfect for drilling on marble glass ceramic tile concrete plastic wood Package Included 1 x Triangle drill bitMore Details