These diamond drill bits are made of industrial-grade carbon steel, creates a high precision, smooth cut with no broken edges. And have a nickel-plated coating to resist corrosion. The diamond hole saw Fine workmanship and was super wear-resistant, sharp. Drilling Guide Tool has adjustable plates opening length is 4-80mm, large enough to put in all sizes hole saws; this tool with vacuum suction, the suction base has good strength to hold the centering jig tight and well on a smooth surface. It is made of engineering-grade plastic, durable quality, not easy to get cracked as those fragile ones. This diamond-coated hole saw bit can be used to remove rings on glass, marble, tile, ceramic, PVC, or other materials. When the diamond bit is working, please continue to add water to reduce the drilling speed, reduce the drilling pressure, and increase the water lubricity, which will greatly extend the life of the bit.
• 15 Sizes Diamond hole saw: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 35mm, 40mm, 50mm, made of high-strength carbon steel, the integrated steel structure makes these diamond drill bits more durable.
• The diamond hole saws coated with high-quality diamond enhance the drilling speed and create a sharp, high precision, smooth cut with no broken edges in seconds.
• Adjustable hole saw drill guide jig fixture with suction base. Plates’ maximum opening length is 3-1/4″, large enough to put in all sizes’ hole saws.
• Removable ball bearings, 2 Modes (3 or 4 bearings fixing) are optional for you. Just flip the plate. Guide hole saw or drill bit to drill clear holes on tile, glass, marble, countertop, granite, etc.
• Drilling holes for Glass, Tile Bottles, Blocks Jars, Fiber Glass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone.
Material: High-Quality Steel, Diamond Dust Coating
Size: 6mm(1/4″), 8mm(5/16″), 10mm(3/8″), 12mm(1/2″), 14mm(9/16″), 16mm(5/8″), 18mm(11/16″), 20mm(3/4″), 22mm(7/8″), 25mm/(1″), 28mm(1-3/32″), 30mm(1-1/8″), 35mm(1-1/3″) , 40mm(1-1/2″), 50mm(2″)
1x Hole Saw Guide Jig Fixture
15x Diamond Coated Drill Bits