12Pcs Metal Hole Saw Drill Bit Set - Stainless Steel Alloy Wood Cutting Kit (15mm-50mm) for DIY Projects, Home Improvement & Professional Use - Universal Metal Tool Accessories for Woodworking, Plumbing & Electrical Work

Material: hard alloyDiameter: 15mm ~ 50mm (15,16,18,20,21,22,25,26,28,30,35,50)Shank Diameter: 9.35mm (± 0.2mm)Length: 70mm(±1~5mm)Suitable thickness: 2-5mm stainless steel plate, within 15mm metal plateGood for: aluminum, steel, wood, plastic materials, gypsum board, stainless steel, etc.1, Hole Saw Cutter before in use, be sure to grasp reasonable, choice, control, tachometer and continuously added to the cooling fluid, in order to prevent edge cracking, such as high-speed gun drill used in the operation should control switch, so opening and closing to minimize its speed, widely used in conjunction with various types of drill hole drilling on the bench.2, Chip smooth, sharped edge, wear and other advantages.Package include:12 x Hole Saw Cutters(a set)