It is a brand new replacement joystick knob & gaiter used on most joystick contollers made by PG Drives Technology. All size view the pictures please. Note: Disassembly of the joystick using basic hand tools is required for installation of the boot. This knob & gaiter will fit on a variety of joysticks, if yours compares to the pictures shown it will fit. These knobs & gaiter are used on the following wheelchair joysticks: VS1, VR2, GC, Remote Plus, Pride, Jazzy, Jet, Hoveround, Shoprider, and Merits and many others. Package: 1 set