Description: 【Durable Material】:The Diamond Sand Welding Marble Hole Opener is built to last, so you can use it for years to come. 【Efficient Work】:This dry diamond drill bit set tool is designed to work quickly and efficiently, so you can get the job done in no time. 【Portable Design】: Compact and lightweight, this diamond drill bit is easy to carry around with you, making it perfect for on the . 【Precise】:The Diamond Sand Welding Marble Hole Opener is designed to ensure precision and accuracy with every use. 【Versatile】:The drill bit saw removes a complete circle from glass, marble, tiles,granite, ceramic or other.perfect for drill glass, tile bottles,blocks jars, porcelain tile ceramic, slate ,. Specification: Material: Alloy Size Chart: 5pcs:20mm/35mm/40mm/45mm/68mm/0.79inch/1.38inch/1.57inch/1.77inch/2.68inch 6pcs:20mm/35mm/40mm/45mm/50mm/68mm/0.79inch/1.38inch/1.57inch/1.77inch/1.97inch/2.68inch 8pcs:20mm/25mm/32mm/35mm/40mm/45mm/50mm/68mm/1.38inch/0.98inch/1.26inch/1.38inch/1.57inch/1.77inch/1.97inch/2.68inch Package Includes: 5pcs Diamond Core drill bit or 6pcs Diamond Core drill bit or 8pcs Diamond Core drill bit (as you choose) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on line shopping!