Share on Facebook a "cage" typically made with four vertical bars, each capable of supporting hooks and/or crossbars which may be placed at any of several possible heights. This allows a barbell to be placed at a comfortable starting height for squats, bench presses, military presses, etc. Often, another set of hooks or a pair of crossbars will be placed at a lower height to catch the barbell if the lifter is unable to return it to the starting position.
