We provide discount for large quantity. Welcome to touch with us! 1:Made of nice materials for durability. 2:Easy to correspond to various footprints on the floor, juice residue, oil stains, etc. 3:It is more useful to change after use, pushing aside the need to clean the mop. 4:As a part of standard maintenance, it can be smoothly removed and replaced. 5:Fit For Xiaomi Roborock S5 MAX S50 S55 Roborock S6 S6 MAXV. Material:cloth colour:Gray Package Contents: 5 x mop material 6 x water tank clear out Only the above equipment content, different merchandise are usually not included. Note: Light capturing and varied exhibits may cause the colour of the article within the picture just a little different from the genuine thing. The measurement allowed error is +/- 1-3cm.