Double acting design for greater speed and positive control.Interfaces with automated operations.3/8" fast flow couplers included on all models.Threaded collar along with hollow plunger design allows for both pull and push forces.Baked enamel finish for increased corrosion control.Removable hardened saddles protect plunger during lifting and pressing.Built in safety valve prevents accidental over-pressurization.Plunger wiper seals reduce contamination, extending cylinder life.Country of Origin: Taiwan