PRODUCT NAME: Professional Quality Dry Vacuum Brazed Drill core bits M14 Thread QUANTITY: 5pcs/set SPECIFICATION: Total length 62mm, M14 Thread ; Diameter 20mm, 35mm, 50mm, 60mm, 68mm, FEATURE: Dry drilling without water feeding, 6mm-16mm bits with Wax inside helps cooling the bits Wide application for drilling tile ceramic granite marble stone.... Vacuum Brazed technology provide much longer working life than electroplated ones (Generally 3-5times) Less Chipping, Minimizing breakage, less heat generation, Better finish quality High diamond exposure rate provides a faster and more aggressive drilling. Save your money and time.... ------------------------------------------------END--------------------------------------------------------- Other Available Diameter: Other specification is available if you order bulk quantity. Note: 1.Please allow 1-3mm error due to manual measurement. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! ---------------------Profile------------------------- DT-DIATOOL provide professional Diamond tools. Please visit our store for more products. Diamond saw blade/ Grinding wheel/ polishing pads/ Drilling Bits/ Router Bits / engraving bits..... -------------------Shipping------------------------- We will send the products through registered post mail, sometimes it will be delay, please try to contact us. We will reply you with a good solution. Thanks. If you order large quantity, we could send them by courier express. ----------------Operation Instruction-------------- Make sure your machine in good condition, and with necessary safety guard. Check our products and read the instruction before using them. Make sure these products for the right application and operate rightly. Please wear necessary safety gear, like gloves, goggles, dust mask. ---------------------Feedback------------------------- Your satisfaction and positive feedback is very important to us.Please leave positive feedback and 5 stars if you are satisfied with our items and service. If you have any problems with our items or services,please feel free to contact us first before you leave negative feedback or oped an case.We will do our best to solve any problems and provide you with the best customer services. Your encouragement and support is our continuously forward momentum. Thank you very much! Best Wishes!