Physical construction High-precision clamp unitary stretching machine is mainly composed with six parts: rack, lead screw, motor, chain drive mechanism, clamps and pneumatic system. This machine is characterized by firm rack, high-precise lead-screw driving, self-locking, and sprocket drive. Clamps are our patent that applies double-rockers mechanism which is of reasonable construction, artistic appearance, and reliable ability. And clamps are adjustable, which is our advantages and reasons that our machines are better than other manufacturer in this industry. Packing size:3300*1500*800mm G/w:700kg