1,QJ type air winche are powered by piston-type air motor. ... of compact structure 3,light weight 4,high quality 1,QJ type air winche are powered by piston-type air motor ... ,advantages of compact structure3,light weight4,high quality ModelQJL0.5/40(A)QJ0.5/120(A)QJ1/120(A)QJ3/200 ... connection, L means the screw connection,without means plate connection QJ type air winche