Hand Operated Single Shot Pumps are spring returned piston type pumps. The piston is operated by pulling the cam handle. These pumps are suitable for manual centralized lubrication for light duty machines such as Small Power Presses, Die Punching Machines, Grinding Machines, pouch Packing Machines, Pharmaceutical Machines and etc. Normally these pumps are recommended for the machines with lubrication points within 2-20.