Although here is suitable located in the packaging itself is a list of which models the essays actually fit for all Dyson models. Since I have a Dyson DC21 Allergy in blue but the parts fit not quite perfect (according list ... DC19 DC20 Dc 22 ... exactly my not) the brushes can be still insert the tube very well and keep well, so because but not "all" Dyson models recommended a star deduction otherwise definitely.