Loved this brush on it's first use today. Really needs a bit of product priming which is fine. It will probably hit its sweet spot after doing a couple of cars. It makes most other applicators redundant in my view. What could be better? No doubt a choice of sizes. One size does not fit all tyre wall thicknesses. Maybe one about 15mm wider and one 25mm wider again. Great product though. One other advantage is its ability to reach into that gap that exists between the rim and the raised rubber strip built into the tyre to kind of help with rim gutter rash. Great product. Get one. Carpro just offer us a couple of other sizes. Big thumbs up.