SKYDIN Hole Saw Router - 1PCS 40MM

FUNCTION: 1. Dry drilling without water feed, 6mm-16mm pieces with wax inside help cool the pieces 2. Wide application for drilling tiles ceramic granite marble stone.... 3. Vacuum soldering technology provides much longer life than electroplated (usually 3-5 times) 4. Less chipping, minimizing breakage, less heat development, better finish quality 5. High diamond exposure speed provides a faster and more aggressive drilling. 6. Save your money and time...