Airtight tank holds compressed air for months. Great for inflating car and bike tires, sporting balls, and other recreational equipment in remote areas. Includes air shut-off valves, pressure gauge, and 3' hose with standard tire chuck.This product contains DEHP a phthalate chemical known to the state of California to cause birth defects and other reproductive harm. This product contains lead a chemical known to the state of California to cause cancer.