【Widely used】Standard grit is ideal for shaping all types of glass, tile, stone and similar materials, and dyed diamond grinder bits satisfy your handyman hobby. 【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 is hardened to improve performance, strength and durability. 【Service Life】Since the working position of the grinding 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. Diamond bits are suitable for all kinds of glass grinding machines, please feel free to buy. You will receive two sizes, 1 Inch and 5/8 Inch. Spiral pattern at the lower end of the drill can work with water rotation. Note: Light shooting 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.