10 Pack Diamond Drill Bit Set, 6mm (1/4inch) Small Diamond Hole Saw Kit for Glass, Ceramics, Porcelain, Ceramic Tile, Marble

About this item HIGH QUALITY MATERIAL: The diamond drill bits are made of premium high-speed steel with nickel-plated coated body that resist corrosion. Thicken diamond coating on the tops offers the ability that each sharp bit for a few holes. DIMENSION: Hole diameter: 0.24inch/6mm; drilling depth: up to approx. 30 mm; total length: approx. 51 mm; shank diameter: approx.5.5mm; number of revolutions: max. 800 / min CLEARANCE HOLE DESIGN: Drill bits set along with side clearance hole facilitates the entrance of cooling water and escape of chips, making the drilling process easier and relaxiable. WIDE APPLICATION: The diamond coated drills are perfect for drilling glass, tiles, porcelain stoneware, granite slabs, tiles. Fit for any diamond tipped drill bits of any brand. TIPS: Start drill at 45 Degree to surface and align to 90 Degree as hole forms.Water is required to cool down the drill when using them.