This diamond countersink bit can bevel rough holes on glass, granite, marble, stones, ceramics and porcelain tiles. And also suitable for easily creating necessary rounded side indentations on pipes or power lines. Vacuum brazed treatment, the high concentration of diamonds can provide faster cutting speed and longer life. Features: Vacuum brazed treatment, the high concentration of diamonds can provide faster cutting speed and longer life. Strict production process to ensure low size tolerance and outstanding countersinking performance. This diamond countersink drill can bevel rough holes on glass, granite, marble, stone, ceramic and porcelain tile. And also great for easily creating the rounded side indentations needed on pipes or power lines. br/>Very useful for improving the surface perfection of exposed holes, it can bring a smooth and beautiful hole, in dry or wet use. Features: Name: Chamfer Diamond<br/ >Material: Diamond Type: Thread M14 Diameter 48mm Item Size: 50 * 48 * 48 mm / 1.97 * 1.89 * 1.89 inch Package size: 52 * 52 * 52 mm / 2.05 * 2.05 * 2.05 inch Package Weight: 200g / 7.05oz Packing list: 1 * Diamond Chamfer Bit Note: The data is all manual measurement, please allow some 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received Delivery Quantity: (according to the main picture)