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Material: Diamond & Iron Matrix Use: Masonry Drilling Surface Treatment: Electroplating Drilling Diameter: 5/6/8/10/12/14MM / 0.2Inches Type: Center Drill Bit DIY Supplies: Electrical Is_Customized: NO Length: 51 mm Application: Glass deep processing Features: - This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other. - Materials and only needs water for lubrication. - Can be used with a standard electric drill. - Use lubrication (water), otherwise the diamond core drill will burn. - Start your hole diagonally, make a round trace and then hold drill straight. Note: - Before commissioning the glass drill, please make sure there is no jumping and then open the hole.Do not exert side pressure to prevent excessive consumption of the product. - Attention should be paid to wearing safety protective equipment when working to ensure safety.