Volta U1850, U1851 Cyclone Cone Filter with Gasket. Genuine Part Nos. Q408H52P233 & Q408K640H08R.Cone assembly fitted inside the cyclone dust catcher.Suits Volta Lite II U1850 & U1851 models.This part is sometimes accidently discarded with the dust.We have been supplying appliance parts to the trade and retail for over 25 years. Buy with confidence.