and long lasting: grinder bits last longer because the 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. Widely used: Standard grit is perfect for shaping all types of glass, tile, stone and similar materials, and dyed grinder bits satisfy your hobby. 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., Weight: 0.32848877038 Pounds, Manufacturer: Tuidzljd