Four M Technologies [P] Limited manufactures Cartridge Swing Pull Cylinders. Four M Technologies [P] Limited also manufactures various types of hydraulic cylinders and hydraulic modular fixturing systems. The Cartridge Swing Pull Cylinders allows manifold mounting where it will take minimum of fixture space. The Cartridge Swing Pull Cylinders are double acting. These Pull Cylinders have rods which during clamp retraction. These Pull Cylinders are available in 90 degree left of right hand rotation or withÿguided straight pull.