Widely used: Standard grit is perfect for shaping all types of glass, tile, stone and similar materials, and dyed diamond grinder bits satisfy your hobby. and long lasting: Diamond grinder bits last longer because the diamond stays in place, our bits are chrome hardened for good performance, strength and durability. Good Performance: The drill bit ishardened to improve performance, strength and durability. Service Life: Since the working position of thegrinding head always stays in place, the consumption is smaller and the service life is longer. Application Range: The glass grinding head adopts the standard frosted design, which is an perfect choice for shaping various shapes of glass, ceramic tiles, stone and other materials. Application: Diamond bits are suitable for all kinds of glass grinding machines, please to buy. You receive two sizes, 1 Inch and 5/8 Inch Colour:Yellow Material:ceramics Package Contents: 1 * 1 Inch Diamonds Grinding Bit 1 * 5/8 Inch Diamonds Grinding Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.