- Joystick knob R-net/VR2/VSI covered with Neoprene Ø55mm P089.120This joystick button has dimensions of approximately 30mm high and Ø55mm. It is equipped with a clamping bush for P&G, making it easy to mount on controls of PGDT.The joystick knob is covered with Neoprene, making it soft to the touch.€75.21Medium stock