• 137 * 40 * 3 inch cold-drawn steel, flat oval tube, novel and unique.
• 4.5 mm diameter high strength flexible imported and high quality nylon rope pulley.
• High density sponge cushion, 1 mm thickness PVC leather fabric.
• Multiple adjustable angle design.
• Main body tube thickness up to 3 mm.
• Belt drive design trajectory following kinematics principle.