ITEM NAME:4pcs Porcelain Spear Head Ceramic Tile Glass Marble Drill Bits Set 4/6/8/10mm Description Description: 100% brand new and high quality Use for Ceramic Tiles, Mirror and Glass Ideal for drilling holes in bathroom tiles, or wall mirrors Glass and tile drill bits provide smooth and accurate Spear pointed design reduces breakout Specifications: Material: Alloy Color: Silver as pic shown Drill diameters: Approx. 0.16inch/4mm, Approx. 0.24inch/6mm, Approx. 0.31inch/8mm, Approx. 0.39inch/10mm Length * diameters: Approx. 2.32*0.12inch/5.9 * 0.3cm, Approx. 2.91*0.2inch/7.4 * 0.5cm, Approx. 3.03*0.24inch/7.7 * 0.6cm, Approx. 3.19*0.28inch/8.1 * 0.7cm Note: It can not used for Tempered glass, All-ceramic tile, marble high hardness meterial Package included: 4x Drill Bits Note: 1.Due to the manual measurement and different measurement methods, please allow 2-3cm deviation. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality store for you! 4 Pcs Mirror Ceramic Glass Tile Drill Bits Set Spear Head For Stand 4/6/8/10mm.4 Pcs Mirror Ceramic Glass Tile Drill Bits Set Spear Head For Stand 4/6/8/10mm. Spear pointed design reduces breakout. Glass and tile drill bits provide smooth and accurate. 4x Drill Bits. We'd like to settle any problem in a friendly manner.