3 Review(s)

HARD DIAMOND BITS: These hole drilling saws are made of industrial grade carbon steel with a nickel-plated coating to prevent corrosion. A thicken diamond coating to achieve cut smooth,sharp and durable without edge collapseHOLE SAW SET 15 SIZES: 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7", 20mm/0.78", 22mm/0.86", 25mm/0.98", 26mm/1.02", 28mm/1.1", 30mm/1.18", 40mm/1.57", 50mm/2". to meet various drill needsFINE DESIGN: The side slots on the bit's body can help the entry of cooling water and the ejecting of debris from the borehole. When debris gets stuck in the hole saw. You can use a small screwdriver to pull it outTIPS: Keep the drill be stable when drilling, the larger the hole saw is, the slower the drill rotary speed. And it is necessary to add water when the diamond drill bit is working, so as not to overheat and affect the service life, Besides the water lubrication will improve the drilling experienceWIDELY WORK: Diamond hole saw drill bit set kit are used to drill Glass, Porcelain, Ceramic, Marble, Granite Stone, Bottles, Pots