Package Includes: KATA hole saw kit includes 13pcs saw blades, 3/4(19mm), 7/8(22mm), 1(25mm), 1-1/8(29mm), 1-1/4(32mm), 1-1/2(38mm), 1-3/4(44mm), 2(51mm), 2-1/2(64mm), 3(76mm), 3-1/2(89mm), 4(102mm), 5(127mm), 2pcs mandrels with bits, 1pc installation plate, 1pc hex key, 2pcs carbide forstner bits and 5pcs brad point wood drill bits.High and Professional Quality: Made of premium heat treated carbon steel,black coating with oil, rust-proof and wear-resistant, very easy to put together the set with the drill, ultra sharp serrations for high-performance, faster and cleaner cutting.Wide Application: Upgraded design with ultra sharp serrations for faster and cleaner cutting,ideal for softwood, plywood, plastic plate, plasterboard and thin PVC board.Great for tasks of cutting multiple hole sizes from small to large in desk surfaces, doors and furniture.Solid Storage Case: The set comes with all new plastic material case for portability.Its a perfect gift for Man, Father, Boyfriend and etc.Warmly Tips: Can be used with a standard electric drill, impact drill, If you need very precise holes, please use a saw machine, not suit for hard metal, hard wood or density board. Not for use for cutting depths beyond about 1(25mm).Other Notes: In upgraded version, put the Installation plate between saw blade and nut can be useful to prevent saw blade from being damaged.Other Notes: Please wear protective goggles and gloves when using KATA hole saw kit, because its safe for you.