Coremax   free weight machine for strength exercise  : 10 free weight series is  designed with the  elliptical  tubes stle. main frame  tube size is  50*100*3.0mm .The driving system is lever style or geometric moment cam,plus high quality  wire rope with 6.0mm  diameter,which is  excellent in design of loading and comfort of machines. It is really a  perfect choice of professional fitness clubs,training centers of athletes or heavy-loading