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 and have a triple chromed finishr r r r lengthr 72 1800mm r r r between collarsr 39 1000mmr r r r diameter r 254mmr r r r weightr 16 lbs 72kgsr r r r weight capacityr 400 lbs 180kg