Powerful motor delivers 10,000 max psi to power through clogged grease fittings.High-volume pump pushes up to 5.0 oz/min high-flow applications.Variable speed trigger offers precise control of the grease flow42" 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 situationsInnovative 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 surfacesAir-bleeder valve assists in pump priming after cartridge changes