dewalt dcgg571m1 20 volt max lithium ion grease gun kit dewalt the dewalt dcgg571m1 20v max cordless grease gun features a powerful motor that delivers 10,000 max psi to power through clogged grease fittings. this battery powered grease gun has a high-volume pump that pushes up to 5.0 oz./min high-flow applications and allows up to 16 cartridges per charge with a single dewalt 20v max battery (4.0 ah). a variable speed trigger offers precise control of the grease flow and the 42 in. extra-long and flexible hose is designed for reaching hard to access grease fittings. it has a bright led light which assists in locating hard to see grease fittings in low-light situations and an innovative pump filter screen that prevents dirt and contamination from clogging the pump mechanism. an integrated no-mar foot design allows operators to rest the tool on flat surfaces. it also has an air-bleeder valve that assists in pump priming after cartridge changes.