I beat the poo out of this little brush on the end of my drill, and it has kept its shape nicely. Like the majority of Lisle tools, it's a quality product built to last.The bristles are very rigid, however, so it's more of a specialty tool for tough spots. Also, it WILL mar many surfaces even with caution, so be careful where you use it.A note on safety: I use the vinyl and sometimes latex exam gloves, and just one of these bristles will (and have) chew them up. So, like any attachment for a power tool, use caution as to not entangle your gloves/clothes while in use.Remember: American Made = Americans Paid