High-volume pump pushes up to 5.0 oz./min. Up to 16 cartridges per charge with single Dewalt 20V MAX* battery. Variable speed trigger offers precise control of grease flow. 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. Air-bleeder valve assists in pump priming after cartridge changes. Includes battery and case.