I've used those round sponge applicators, the ones you put your over your fingers and even my bare hands to apply wax looking for the "just right" mix of even and thin coating. I now use this.
They're a great size, nice and firm and easy to grip allowing me to get an even amount of wax onto a panel. I've recently "lost" the one that came with my wax to a friend and was pestering John to get these for sale....and he listened! Thanks for that.