Features • Exceptional Diamond Coating: Crafted with a diamond-coated design on a robust carbon steel base, ensuring high durability and precision during all your drilling tasks • Versatile Material Compatibility: Ideal for a wide range of surfaces including porcelain, glass, marble, ceramics, rock, and granite, making it perfect for various projects • Precision Drilling Performance: Features thick brazed blades that deliver clean, accurate holes and smooth circular cuts, enhancing the overall quality of your work • Superior Longevity: Engineered for heavy-duty applications, this drill bit offers enhanced durability and performance compared to standard diamond hole saws • Efficient 35mm Punching Depth: Designed for fast drilling speeds, the sharp cutter head allows for a maximum punching depth of 35mm, providing practical solutions for your needs Features: 1、DIAMOND COATING: The diamond hole cutter is made of carbon steel, with diamond coated hole saw bit, extremely sturdy and 2、SUITABLE FOR A VARIETY OF MATERIALS: Can be used for porcelain, glass, marble, ceramics, rock and granite, etc. 3、GOOD QUALITY DRILLING: Thick blades with brazed design, very suitable for drilling clean and accurate holes and cutting circles 4、LONGER SERVICE LIFE: Heavy duty hole saws have superior performance and durability than other ordinary diamond hole saws 5、35MM PUNCHING DEPTH: Of sharpn cutter head bring fast drilling speed, punching depth up to 35mm, useful and practical Specification: Item Type: Diamond Drill Bit Material: Carbon steel + diamond coating Punching Depth: Approx. 35mm / 1.38in Handle: Triangular handle Package List: 1 x Diamond Drill Bit 1 x Storage Box Note: Start drilling at a 45 degree angle, and drill vertically when the edge is cut to avoid the hole saw from slipping. Never let your drill bit run dry, use water to keep wet and cooling. Package List 1 x Diamond Drill Bit 1 x Storage Box