Established in 1999, Hangzhou Wantong Tools Manufacture Co., Ltd. is a manufacturer specializing in M3/M42 bi-metal hole saws, bi-metal/HSS hack saw blades, high carbon steel hole saws, lock installation kits, wood flat bits, tungsten carbide gritted hole saw sets, HSS drill bits, and other hardware sets. All of our products are for export to more than 20 countries and regions, including North America, Western Europe, Japan, Australia, the Middle East, and Southeast Asia. Wantong Tools is always concentrating on developing, testing, and improving the products that we manufacture. We guarantee our products are of superior quality, highly competitive prices and speedy delivery.