you can get gardiners to fit them in the brush when you order it, but i got the jets after the brush. They are easy to fit, know the old ons out, i pull the 2 bunches or bristles closest to the jet hole out, then just went through with a 12mm ( i think, best to double check) drill, then know the fan jets in, the should be an interference fit so that the hold them selves in place, no need for glue.