This is a new ball type arch Trimmer,which is innovated by ourself independently,obtains the national invention patent and the outward apperance design patent,changes then tranditional polishing way,its spherical machine part can work at 0-45°degree incline,meeting all the requirments of different work ways and angle requested,with sharpness and wer-resisting the tungsten steel wheel head,and the independent illumination LED. there's no dust after connecting with dust collect hose.