Warranty: Manufacturer's, RAM Mounts (National Products Inc.), Limited Life Time Warranty.
Material: Black powder coated marine grade aluminum.
Description: This 4 inch long rigid aluminum .25 inch diameter pipe is powder coated and has a .25 inch NPT Male thread at either end. These arms are used for many of the Laptop Tray Mounting Systems. They are rigid pipes that can securely hold many different types of weights.