DEWALT grease gun can power through clogged grease fittings with a motor that delivers up to 10,000 max PSI High-volume pump of the battery grease gun pushes up to 5.0 ozmin high-flow applications. DEWALT 20V grease gun kit can control grease flow with the variable speed trigger Reach hard to access grease fittings with the 42-inch flexible hose Locate hard to see grease fittings in dark work areas with the bright LED 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