Features: _x005F_x000D_ - 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 _x005F_x000D_ - Can be used with a standard electric drill( Excluding in this item ) _x005F_x000D_ - Easy to use, high quality,good performance, long life _x005F_x000D_ - Excellent for making clean and accurate hole on glass, tile and marble _x005F_x000D_ - Always use lubrication (water ), otherwise the diamond core drill will burn- Start your hole diagonally, make a round trace and then hold drill straight _x005F_x000D_ - Popular Sizes: 3/4" (20mm)&1" (25mm)&1 1/4" (32mm) &1 3/8" (35mm)&1 1/2" (38mm) _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ Package Includes: _x005F_x000D_ 1 x 5pcs Diamond Coated Hole Saw Drill Bits _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ Note:_x005F_x000D_ _x005F_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.