A wet & dry washable PET filter - can be used for wet, damp or dry usages. If your vacuuming up dry substnaces and theres a leak or spillage, theres no need to remove the filter. Suitable for use with buddy ll range of wet & dry vacuum cleaners - argos cat refs 5546961 (buddy ii 12 wet n dry vac) 5698943(buddy ii 18 wet n dry vac) and 5711215 (buddy ii 18t wet n dry inc power out let socket). 1 wet & dry pet washable filter.