Buddy Kit for 500/n79/n79s/n79se/n79w, replacement parts for dn622.11 Suggest to replace the n79s Replacement Parts every 2-3 months to keep your vacuum at , it also depends on your frequency of usage Easy to Install these Replacement Parts, the installation method is the same as that of the Parts Colour:Black Material:plastic Package Contents: 1 * main brush 3 * filters 6 * side brushes 1 * tool brush 1 * screwdriver Only the above package content, other products are not included. Note: Light 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.