Diamond Hole Saw Set This premium professional diamond drill bits set, with multiple hole drills and a saw blade. Vacuum brazing technology provides a rapid, simple, and clean cut. It is suitable for porcelain, granite, marble. Efficient & Smooth Cutting Complete Tool Set Humanized Structure Simple Operation Features & Details Efficient & Smooth Cutting : The glass drill bit is made of premium grade diamond, delivers more effective performance than a traditional carbide or bi-metal hole saw. Vacuum brazing technology makes it highly thermostable and durable to use. Complete Tool Set : Our porcelain drill bit includes 6 sizes: 1.25"/1.4"/1.5"/1.6"/2"/2.6" ( 20/35/38/40/50/68 mm ) . It features a 5-inch saw blade. Having these types available will help you cover almost all of your applications. The drill set also comes with a storage case for your convenient carrying. Humanized Structure : This hole saw drill bit set adopts 5/8"-11 universal thread, suits for angle grinder. The design