It is an perfect set to forget about changing accessories for a long time, but always depends on its use. To do this, we will detail the duration and best way of maintaining the refills.For the maintenance of spare parts, it is important to note that they should be carefully cared for and cleaned assiduously, then we show you the perfect times for replacement and its durability:Central brushes: should be cleaned every 1-2 uses. Lasts for 2 to 4 months depending on use.Filters: should be cleaned ideally every 3 uses. Lasts for 1 to 3 months depending on use.Side brushes: should be cleaned every 4 uses. Lasts for 1 to 3 months depending on use.Material:plasticcolour:As ShownPackage Contents:2 x Dual Multi-Surface Rubber Brushes6 x HEPA Filters6 x Edge-Sweeping BrushesOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.