Sipery 10Pcs Diamond Drill Bits 6mm/0.24inch Glass Tile Hole Saw Bits, Hollow Core Drill Bits Extractor Remover for Glass, Ceramics, Porcelain, Ceramic Tile

Specification Package: 10Pcs diamond core drill bit 6mm / 0.24inch Material: Carbon Steel, Diamond Particles Coated Cutting Diameter: 6mm/0.24inch Shank Dia: 5.5mm / 0.22inch Total Length: 56mm/ 2.2inch 1. Not for use on Concrete. Water or Coolant is required when drilling, or the diamond core drill will burn. 2. The general rule is the smaller the diameter of your drill bit, the faster drill speed you can use. The harder your material, the slower drill speed you should use. 3. Diamond hole saw can drill slate marble, but only for a few holes, because diamond would wear off easily and shorten its work time, which happens to any diamond tipped drill bits of any brand. 4. Widely Application: Glass drill bit is used in the processing of drill glass, tile bottles, ceramic, porcelain, slate mable, granite light stone, but needs water for lubrication. Sipery Service 1. Sipery is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools for many years. 2. We guarantee your 100% satisfaction! If within 30 days you are not satisfied with our products, just return it for a full refund! No questions asked! 3. If Wanna more Tool Accessories, just search "Sipery". Knidly Note 1. Please allow 1-2cm errors due to manual measurement, thank you for your understanding! 2. Actual color may vary slightly due to differences in monitors and lights.