Develop upper arm mass, strength, and definition with the Olympic Ez curl bar. This essential weight training tool isolates and intensifies the development of the bicep and forearm muscles while decreasing discomfort to the elbows and wrists. The curl bar is designed to accommodate weight plates with a 2-Inch center hole. This bar features medium-Depth diamond knurled 25.4 mm hand grips for a secure grip and rotating sleeves with bushings the forearms and wrists.