well I was under the same impression.There's always these different cut levels and different cutting pads.Anyway, before I actually bought this kit, (I have the sampler kit here: http://www.cleanyourcar.co.uk/polishing/polish/menzerna-250ml/menzerna-250ml-sampler-kit/prod_220.html)I found this guide that shows you which to use! http://www.detailingworld.co.uk/forum/images/misc/dapolishing.pdf Page 19/55 is what you want! I will be giving this a go tomorrow, look out for some before and afters and also tape pictures! the bonnet is a MESS and i'm going to be taping half off and seeing what a difference I can make.