Features:* * , more durab* The filter filters fine dust to reduce the penetration of dust, pollen, and other allergens into the air you breathe* The side brush can go deep into corners and edges to remove more dirt, dust, and debris.* As part of normal maintenance, it can be easily removed and replaced* It is best to replace spare parts every 2 to 3 months, to keep the machine in the best performance* Fitment: for Coredy R3500,R3500S,R550(R500+),R650,R600,R700Package Contents(optional):A:1*roller brushes2*filters3*side brushes1*bird brushB:1*roller brushes8*filters4*side brushes1*small brushC:2*brush roller8*filters10*side brushes1*small brushNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.