fit to most 36" plotters of the latest generation, (not for small plotters with Wi-Fi )

This clip is often brakes and there are no replacement offered by HP. If you use these plotters you know how inconvenient when paper tray cannot stay on and prints may fall on the flor and get dirty. 

Clip is Very easy to replace, no tools required to install. You may need tools, like flat-tip screw driver, or pliers to take brooked pieces of the old clip out.