These Maxum OEM gas springs are custom charged and are intended for large quantity purchases. Custom charged gas springs cannot be returned. It is the responsibility of the customer to determine all required dimensions. * Mount gas springs rod down. Provide physical stops to limit the spring's extremes. Do not scratch, dent, chip, bend or paint the rod. Do not puncture or incinerate. User is responsible for determining whether the Maxum Hardware product is fit for a particular purpose and suitable for user' application. Except where prohibited by law, Maxum Hardware and seller will not be liable for any loss or damage arising from the Maxum Hardware product, whether direct, indirect, special, incidental or consequential, regardless of the theory asserted, including warranty, contract, negligence or strict liability. Gas Springs are also known as Spring Lifts, Lift Shocks, Lift Struts, Lift Supports, Gas Cylinders, Gas Spring Dampers, Lift Supports, Gas Struts, Universal Gas Springs and Tension Springs. We offer gas springs that are utilize in the following areas: Marine Industry Pharmasutical Industry RV Manufactures Rack Fabricators RV Window RV Canopy Marine Live Well Lid Liftgate Lift Supports, Liftgate Lift Struts, Liftgate Hood Props Trunk Lift Supports, Trunk Lift Struts RV Replacement Returnable Packaging Mobile Antennas Marine Window Supports Truck Dock Door Gas Springs Pick-up truck Camper Shell Tailgate Lift Supports Boat Lid Gas Springs Mobile Antennas Satellite Systems Hood Lift Supports, Hood Lift Struts, Hood Props Truck Tonneau Covers Aircraft storage compartment Helicoptor Doors Awnings RV Canpoies Deck Lid Supports Concession stands Motor Home Canopies RV Doors Marine Door Along with gas springs we have a wide variety of ball studs and Gas spring mounting brackets. Components are available in both zinc plated mils steel and stainless steel.