The squirter tube on the wiper arm was only on the Murcielago (580). The 640's and 670's and Aventadors have squirters mounted on the lower windshield trim. Hope these help, they also shows lower arm pivot point, blade attachment detail (comes in handy for those who want to make their own wiper arms!) I took these pics at Newport Lamborghini when I was making my W/W arm for my 670 changeover.