"Featuring a double-chambered design, the NRS Super 2 HP Pump makes short work of inflating SUP boards, kayaks, and other high-pressure inflatables. Durable construction includes Leafield C7/D7 valve adapters, plus adapters for Halkey-Roberts New Short, Summit 2, and H3 valves, ensuring you can pump up all your equipment. Air Max mode engages the large-diameter outer chamber to inflate with maximum volume, while Power Booster mode engages the small-diameter inner chamber to deliver high pressure. An integrated pressure gauge lets you accurately inflate your gear. This NRS pump inflates up to 25 psi. 22."" x 4.5"" dia. Hose Length: 48"". Weight: 4 lbs.Manufacturer model #: 80057.01.100. Double-chambered design for volume or pressure Air Max delivers high volume Power Booster delivers high pressure Tough build stands up to adventure Includes a variety of valve adapters Built-in pressure gauge"