Rocketlok Curl Bar Rocketlok solid chrome curl bar is designed to develop upper arm mass, strength and definition. This bar isolates and intensifies development of the bicep and forearm muscles while decreasing discomfort to the elbows and wrists. The curl bar weighs 7lbs., and the dimensions are (L 34.75) x (H 2.75"). Use the weights from the 100 pound set, or purchase 4 packs of the 2.5 or 4 packs of the 5 pound weights to customize your curl bar Lets you rapidly adjust weights in seconds