The structural design consists of a barbell bar and a fixed track frame. The barbell bar moves along a fixed trajectory and cannot be disassembled. The two fixed motion tracks are framed by the frame. Some Smith machines are also equipped with safety locks, multiple hooks and handles, adjustable slopes and heights, etc., to increase the safety and diversity of training. Comprehensive exercise area: capable of performing various training movements, almost reaching all muscle groups throughout the body. Widely applicable to a wide range of people: For beginners, it helps to quickly find muscle strength, establish correct movement foundation, and reduce the risk of injury. Experienced fitness enthusiasts can also use it for heavy weight training or try more complex movements to challenge their limits. Product advantages and high safety factor: During heavy training such as squats and bench presses, the safety buckle allows fitness enthusiasts to stop movements in a timely manner when exhausted, avoiding danger caused by uncontrollable weight.