Incredible extension and flexibility to get into hard-to-reach spaces Compatible with multiple accessories so you get the best clean Easy to attach and detach from the vacuum Compatible with the following models: HV300, HV300W, HV301, HV302, HV303, HV305, HV310, HV320, HV320W, HV321, HV322, HV323, HV324Q, HV325, UV422, UV450.