Continuously pumps grease while trigger is depressed. Delivers up t 6,000 PSI. Head cap port for adding air bleeder valve or bulk loader fitting. Capable of 3-way loading: 14 oz. cartridge, bulk or suction. Recommended inlet pressure - 90 PSI. Dispenses 5 oz. per minute. Product Features:Continuous flow pumps grease as long as trigger in depressedUses compressed air for high pressure with minimal effort5,000 PSI max40:1 Pump ratio @ 90 psi