Calidad 1/2" Vacuum Brazed Dry Diamond Core Drill Bit "Needle D's"

Calidad Needle D's 1/2 inch for electric drill 

These half inch solid steel Calidad quick bits are designed in the latest dry-cut diamond technology. These new and improved drill bits offer longer life, smaller holes, smaller cutting while avoiding damaging the bits or the workpiece. 

• Vacuum Brazed Diamond Technology - High strength diamonds for faster tile drilling; great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic 
• Details - Diamond coating enhances the drilling speed; Depth mark useful for the precise project; Including portable plastic storage cases for convenient use and store.
• Start Tip - Exact start tip for a minimal bit of walking 
  
• Pressure - Ideal for relieving pressure on certain cuts 
• Dry Drilling Design - Diamond Drill Bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface; Water can be used as additional cooling to prolong the life of the bit.
• Worry-Free & Assistance -- If you encounter any problems in using the products, please feel free to contact us for satisfactory customer service.