The BANSBACH Easylift® gas spring is made from steel with CeramPro®-treated rod technology to provide a smooth, durable surface. Powder-coated cylinder provides maximum resistance to corrosion. Spring is filled with nitrogen (N2) for controlled pushing, and lifting or lowering without external energy. Temperature range: -22° to 176°F. Note: Note the thread sizes on either end of the gas spring and that of the fitting when matching the 2 together.