Electrolux Ergorapido Vacuum cleaner filters. This is a set of a pre-filter (outer) and a fine filter (inner). I used these with a vacuum cleaner, model ZB3502IG, but it broke, so I am selling a new set of filters that I had purchased as spares. I contacted Electrolux customer support and purchased the pre-filter (outer) for 2100 yen and the fine filter (inner) for 2900 yen. Please check your vacuum cleaner model as the filters may vary depending on the model. Thank you.