Application model: for RV2001WD AV2001WD Robot Vacumm. (Please confirm your vacuum cleaner model before purchasing) Easy to replace: As part of normal maintenance, it can be easily disassembled and replaced. [Tips] We recommend changing the consumable replenishment kit every 3 to 6 months, depending on your usage. Color: as shown Material: fiber Package Contents: 4 x Vacuum Mop Pads Only 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 +/- 1-3 cm.