Model 72 vitesse weight lifting bar and 50kg mixed weight set details our 72 standard threaded bars are engineered for easy loading and unloading of standard plates the bars have threaded ends and two sure tighten star lock collars are included the bars are made of cold rolled steel copperised and chrome finished the 50kg weight set is designed as follows fits on all regular sized 254mm diameter bars craftsman designed extra rib for more support extra thick cast around the center ke