Masterline Foot PumpMasterline Foot Pump This heavy duty foot pump is the perfect tool for inflating and deflating towables, boats, and other inflatables. The pump features a 46 inch long hose and 5 adapters, including Boston and stem, to fit most valves. It reaches a maximum air pressure of 2. 9 psi, allowing for quick and secure inflation of large towables. Compact size allows it to fit under kayak decks or boat seats, great for "topping off" your towables.