Model Vol. per Dual Max. Max. Pressure3 Maintenance ReplacementNo. Description Material Stroke Gauge1 Converter2 Weight Vacuum Unassisted Assisted Kit4 GaugeSilverline Vacuum 2.2 lbs04010 Pump, 16cc No 1.0 kg 06172w/ gauge Aluminum/ 1 cu. in. Yes 15 psi 3