Compatible Models: Replacement rags for W860 880 920 window cleaning robots. Please confirm your machine model before purchasing. Washable Microfiber Material: The replacement rags are made of fibers, delicate and exquisite, and perfectly match the before window cleaning robot equipment. Powerful Decontamination: With powerful and long-lasting cleaning ability, it can handle stains such as marks, juice residue, oil stains on , etc. Easy to disassemble and replace: Fix the replacement part with the cleaning rag on the bottom of the machine to complete the installation. Colour:Gray Material:fiber Package Contents: 4 * Mop Cloth Only the above package content, other products are not included. Note: Light reflection 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.