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This diamond drill bit set includes 15 diamond drill bits in various sizes, allowing you to choose the right one for different tasks. Each piece is made of premium diamond material, ensuring that the hole openers are strong, sturdy, and wear-resistant for a long service life. The set is designed for use on glass, ceramic tiles, marble, and ceramic surfaces, but please note that it is not suitable for metal. These hole openers work with a standard drill and provide faster and cleaner cutting performance. For easy use, simply apply water as a lubricant during operation; continuous lubrication with water or oil is crucial, otherwise the drill bit may overheat and burn. The product has an item type of diamond drill bit, material of diamond, and weighs approximately 300g / 10.6oz. The overall product size is approximately 12.5 x 5.5 x 9 cm / 4.9 x 2.2 x 3.5 inches. The package includes a total of 15 diamond drill bits, each in a different size to meet your varying drilling needs.

Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We do our best to provide you with satisfactory customer service.