Item Description:Features:-It has strong toughness and wear resistance. Incision resistance are small, increase the speed, long service life-Drills Glass, Ceramic, Wood, Metal, Plastic, Tile, Cement and more-Faster of Hole.Durable several times than general drill bit.-It can be used with the ordinary drilling hammer.-It must be add coll-ant when it is being used.-When drilling the hole,your force should be slow,especially at the beginning of drilling and when it is drilling the glass through.Specifications:-Material : Tungsten Steel YG6-Surface Treatment : Titanium Plating-Bit Type :Tile & Glass Drill-Drill Diameter : 6mm-Shank Diameter : 4.5mm-Total Length : 72mmPackage includes:10 x Glass DrillItem Specification:Type: Core Drill BitDIY Supplies: TilingMaterial: Tungsten CarbideUse: Masonry Drillingis_customized: Yeslength: 72mm