Specifications:The brazed diamond drill bit is perfect for hole cutting on concrete, granite, marble and tile.With vacuum technology, it can through hard tiles, concrete, marble and granite with ease.Made of high quality diamond material, it is durable, solid and has long service life.Item Name: Drill BitMaterial: DiamondFeatures: Durable, Drilling Tool, High HardnessDrill Bit Height: 60mm/2.36" (Approx.)Size Chart:6mm: Product Hole Diameter: 6mm/0.24", Product Size: 6 x 0.6 x 0.6cm/2.36" x 0.24" x 0.24" (Approx.)8mm: Product Hole Diameter: 8mm/0.31", Product Size: 6 x 0.8 x 0.8cm/2.36" x 0.31" x 0.31" (Approx.)10mm: Product Hole Diameter: 10mm/0.39", Product Size: 6 x 1 x 1cm/2.36" x 0.39" x 0.39" (Approx.)12mm: Product Hole Diameter: 12mm/0.47", Product Size: 6 x 1.2 x 1.2cm/2.36" x 0.47" x 0.47" (Approx.)14mm: Product Hole Diameter: 14mm/0.55", Product Size: 6 x 1.4 x 1.4cm/2.36" x 0.55" x 0.55" (Approx.)16mm: Product Hole Diameter: 16mm/0.63", Product Size: 6 x 1.6 x 1.6cm/2.36" x 0.63" x 0.63" (Approx.)18mm: Product Hole Diameter: 18mm/0.71", Product Size: 6 x 1.8 x1.8cm/2.36" x 0.71" x 0.71" (Approx.)20mm: Product Hole Diameter: 20mm/0.79", Product Size: 6 x 2 x 2cm/2.36" x 0.79" x 0.79" (Approx.)22mm: Product Hole Diameter: 22mm/0.87", Product Size: 6 x 2.2 x 2.2cm/2.36" x 0.87" x 0.87" (Approx.)25mm: Product Hole Diameter: 25mm/0.98", Product Size: 6 x 2.5 x 2.5cm/2.36" x 0.98" x 0.98" (Approx.)28mm: Product Hole Diameter: 28mm/1.10", Product Size: 6 x 2.8 x 2.8cm/2.36" x 1.10" x 1.10" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Drill Bit