its all standard and Olympic bars. Simply put one end of the bar in the platform cup and load up the other end with all the weight you can handle. The T-Bar Platform features an oversized solid steel axle pivot point with dual bronze Oil-Lite bushings that lock rock-solid to any 2" or 3" tubing, or it can be bolted to the floor. Full 360° swivel-ability makes it a dream come true in tight workout quarters. Built for a lifetime of heavy-duty back-blasting workouts! Patent Pending. Cannot be used independently.