These diamond drill bits made of high-speed steel that is durable which are high quality and good performance that excellent for making clean and accurate hole.
Size：18mm, 25mm, 30mm, 35mm, 45mm
Pack Size: 1
* Glass, sea glass, beach glass, fused glass
* Stone, gemstones, rock, pebbles
* Ceramic, porcelain, tiles, glazed pottery, plates