Used this to wash a brand new Duramax 1 ton truck was bought new clayed polished and coated with Adams graphene coating kit. I use this kit on customers cars on a regular basis, and all my personal cars decided to get this brush to make the washing process of this lifted dually a little bit easier and faster, this brush scratched the entire vehicle that has an Adams 7yr graphene coat on it and it was after the truck was power washed and blasted with the foam cannon using Adams graphene shampoo I highly recommend you stay far away from this brush it will scratch your vehicle. It does not protect anything is not safe on any surface at all and it is a big waste of money. IT IS NOT SAFE ON ANY SURFACE. DO NOT BUY THIS BRUSH. The boers hair is very questionable as it feels like a plastic bristle and I am not impressed with the quality. CAN’T BE MORE CLEAR. THIS WILL SCRATCH YOUR VEHICLE. DO NOT USE IT.