Chain bending machine, various tools for wood working tools , masonry working tools and metal working tools for power tools and air tools, which refer to flat wood bit, auger bit, forstner bit, expansive bit, nutsetter, screwdriver bit , hollow punch, adjustable circle hole cutter, hole saw(included carbon steel hole saw, bi-metal hole saw, tungsten grit tipped hole saw, hss hole saw etc ) , sds-plus hammer drill bit and chisel, hss twist drill bit , saw blade, level, and various tools kit.