Sardine Sport Commercial Grade Smith Machine Cable Machine, 3.5mm Thickness Heavy Duty Steel, Plate HolderCommercial Grade Sardine Sport Smith Machine has been engineered to withstand heavy use in all gym environments. The frame is constructed from heavy gauge steel with end plates that are up to 15mm thick Frame&Construction Most guide rails are hollowed out to save on costs which makes them susceptible to bending and cracks Eliminate Potential Safety Issue it also comes with 6 heavy duty Olympic Weight Plate storage posts so you can safely store plates