Features: FIT MODELS – Fit for Dyson V7 V8 Vacuums. The post filter is only compatible with Dyson V7 and V8 vacuums. NOT COMPATIBLE – These replacement parts are NOT compatible with V6 vacuum. Please confirm your accessories model and size before order! For more details refer to the product picture. COMPARE TO PART – Pre-Filter 965661-01 and Post- Filter 967478-01. These replacement parts work well and fit your vacuum cleaner. VALUABLE PACKAGE – Includes 2 Pack Post- Filters and 2 Pack Pre- Filters. MAINTENANCE – Recommended to replace replacement part once every 2-3 months, or dependent on usage.