Air Tow Assist Bag Kit. Professional install is recommended. No Drilling Required For Install, Bolts Into Factory Holes. Kit Includes: 2 – Standard 2500lb Air Springs Vehicle Specific Mounting Brackets With Hardware 1/4 D. Approved Air Line With Fittings And Schrader Valve. Provides Up To 5000lbs Of Leveling Capacity Easily Add Or Remove Air Same As You Would A Tire. Never exceed more than truck manufacturers maximum load recommendations.