Made of high quality material, and durable to use, long service life. Exquisite and delicate, highly matched with equipment. recommended replacement cycle is every 1-2 week to maintain the best performance of the machine. Help your robot vacuum cleaner maintain the good cleaning performance. As part of normal maintenance, Easy to remove and replace. Product name:Vacuum Cleaner Parts Compatible:For M7 pro Colour: picture color Material: plastic Size: about 28x10cm Package Contents: 1 * Water Tank 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.