OTC 4020AMH Stinger Foot Operated Air/Hydraulic Pump. Sticker says R value: 6000 psi. Good working Used condition with wear and dirt. Brand name stickers are all missing, but the model is on it.Has exterior scratches, but the tank does not leak. Hose has dings as well but also does not leak. Ready to be filled back up and used. See all pics for details and condition. The item "OTC 4020AMH Stinger Foot Operated Air/Hydraulic Pump" is in sale since Monday, January 20, 2020. This item is in the category "eBay Motors\Automotive Tools & Supplies\Air Tools\Other Automotive Air Tools". The seller is "seeley1611" and is located in Cathlamet, Washington. This item can be shipped to United States.