John Deere sound gard body rear window wiper kit. This was recently removed from an 8850. The wiper wasn't run before it was removed from the tractor for fear of scratching the glass with dust, but the wiper motor runs when hooked up to a 12V battery. The metal strap attaches to the screws that hold the rear glass in place. A rotary switch is included. This switch was installed in the AC/Heater bezel. There isn't a John Deere part number on any of the parts, but John Deere sells a similar kit today under the part number RE41817. Believed to fit 30, 40, 50, 55, and 60 series row-crop tractors as well as 30, 40, 50, 60, and 70 series 4wds. Will not work with sliding rear glass.