This kind of tools are the first convertible-style patent combined cutting tools for woodworking of China.Neither exchange parent fraction adopt for imported Tungsten Carbide cutting tip,high wearing resistance,it can fix any of the 3.175mm,4mm,6mm tools.One-off to be completed cutting MDF,PVC,Acrylic,Rosewood and flower types chamfering of edge,greatly improve the work efficiency,it can customized any kind of flower types.