Practical modern wiper motor for continual use 6 volt. polished stainless steel cover, will 'auto-park' to one side. central drive offtake (6mm), requires 8.7mm shaft hole through screen, with one stabilising mounting, body approx 80mm deep x 83mm wide x 58mm deep oscillating 110 degree sweep. shaft approx 120mm long which can be cut shorter if required. this unit requires a separate switch.