Perfect Replacement Kit: Accessory kit fits for Romba 600 610 620 650 675 677 692 671 694 691 614 615 635 676 670 690 and 536 551 552 564 585 589 595 robot cleaners, please check your vacuum cleaner model and part. Replacement Frequency: It is recommended to replace the spare part every 2 to 4 months to keep your robot clean and performing well Professional: Additional accessory kits available from professional manufacturers, made of high-quality environmentally friendly materials. Material: Plastic Color: As shown Package Contents: 2 * Caster 2 Pair * Brush Main 6 * Filter 12 * Side Brush 12 * Screws 6 * Cleaning Tools 2 * Screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.