Includes a pair or set of XMark BLACK DIAMOND premium quality rubber coated Olympic weight plates and a XMark XM-3675 EZ curl bar with a 28mm grip. COLLARS NOT INCLUDED. XMark Olympic EZ Curl Bar is a carbon steel bar that is built to last. EZ curl bars are easier on the wrists than a straight bar. The XMark curl bar allows you to isolate your biceps while keeping your back out of the movement. Some of the top curl bar exercises includes; Preacher Curl, Reverse Grip Curl, Upright Rows and Overhead Triceps Extensions. Without a question…the quality of XMark's curl bars is excellent. XMark offers a large selection of Olympic bars, curl bars, Olympic weight plates and weight plate sets to meet your budget. Explore the possibilities with XMark.