For the professional or advanced rider or even for studio use, the Minoura LiveRoll R800 is the world's best roller. - A heavy and wide roller with steel covers attached. Can be used for smoother and higher-speed rotation practice over other smaller diameter rollers. - Matched wheelbase adjustability with continuous adjustment on frame. - Uses a high-rigidity and lightweight aluminum frame with front drop roller that adjusts the middle roller to provide a safe spin even at high RPM's. - Feet and footrest are height-adjustable at six points. - 22" wide x 6" high x 52" long