General description This premium professional diamond drill bits set includes multiple hole drills and a saw blade, designed for efficient and smooth cutting. It utilizes vacuum brazing technology for rapid, simple, and clean cuts, making it suitable for porcelain, granite, and marble. Technical specifications Model: QHKZ5PCS Material: Diamond Drill Diameter: 0.8"/1.4"/1.5"/2"/2.6" (20/35/40/50/68 mm) Segment Height: 0.6 in / 15 mm Bit Length: 2.36 in / 60 mm Product Weight: 3.2 lbs / 1.4 kg Compatibility and accessories 5 x Hole Saw 1 x Saw Blade 1 x Toolbox for convenient carrying Installation Compatible with 5/8"-11 universal thread, suitable for angle grinders. For best results, start drilling at a 45-degree angle, then continue at a 90-degree angle with the horizontal surface. Usage Can be used for both dry and wet cutting; adding water is recommended to prolong the service life. Ideal for drilling hard materials such as ceramics, marble, masonry, and granite. Other information