6.35mm Hexagonal Shank Diamonds Brazed Dry Drilling Bit Hole Punch Tool for Precise Drilling in Various Materials

6.35mm hex shank design, fit for most drill chuck. Wax inside for cooling, Dry drilling without water. Very high efficiency, multi-purpose drilling. 6.35mm Hexagonal Shank Diamonds Brazed Dry Drilling Bit Hole Punch Tool for Precise Drilling in Various Materials. Features: 6.35mm hex shank design, fit for most drill chuck. Wax inside for cooling, Dry drilling without water. Very high efficiency, multi-purpose drilling. Long life drilling. For drilling granite marble, masonry, concrete, tile/ceramic, glass, hard plastic. Specifications: Component: Diamonds Drill Bit. Option Diameter Size: Approx. 5mm/0.2inch, 6mm/0.24inch, 8mm/0.32inch, 10mm/0.39inch, 12mm/0.47inch, 14mm/0.55inch, 16mm/0.63inch, Overall length: 65mm/2.56inch. Hex Shank: 6.35mm/1/4inch. Package Includes: 1pc Dry Drilling Bit. note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color