Compatible with for ilife A9s A9 A7,Silvercrest SSR1 SSRA1 robot vacuum cleaners.The roller brush kit is replaced regularly and helps to improve the efficiency of the machine.Side Brush easy to remove dirt, dust, and trash in corners and edges from the accessories, especially human hair and pet's hair.The Side Brush may be winding in its small packing bag, this is normal, just put it in hot (about 80 ) for several minutes to recover.Easy to install and simple to replace.Colour: black + yellowMaterial: plasticSize: 16.3cmPackage Contents:1 x main brush1 x main brush cover4 x side 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 +/ 13cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia