Powerful motor delivers 10000 max psi to power through clogged grease fittings High-volume pump pushes up to 5.0 oz./min. for high-flow applications Up to 16 cartridges per charge with a single DEWALT 20V MAX 4.0 Ah battery Variable-speed trigger offers precise control of the grease flow 42 in. extra-long and flexible hose designed for reaching hard to access grease fittings Bright LED light assists in locating hard to see grease fittings in low-light situations Innovative pump filter screen prevents dirt and contamination from clogging the pump mechanism Integrated no-mar foot design allows operators to rest the tool on flat surfaces Air-bleeder valve assists in pump priming after cartridge changes Perform daily maintenance grease applications with the DEWALT 20V MAX DCGG571 Grease Gun in up to half the time versus using a manual grease gun. It is ideal for users in the agricultural, heavy equipment maintenance, manufacturing and MRO, and automotive repair industries.