The joysticks shown in the top two illustrations are examples of panel or bushing mount designs that are mounted using one 22 mm bushing nut/bezel. The lower joystick mounts via four M2.5 screws. The threaded bushing incorporates a flat side for anti-rotation. Sealing gaskets are provided as standard with this mounting style. The boot style is different and clamps between the joystick and the panel, acting as both the boot but also a sealing gasket. No bezel is necessary, however a round finishing bezel is supplied with each joystick.