Areas of application: the accessories are only compatible the Roborock Q Revo robot vacuum cleaner. Please check your machine type be compatiblee ordering. Main brush and side brush: removable main brush, locks quickly and can be easily replaced. 3-arm side brush cleans corners and edges more effectively. Spin cleaning pads and HEPA filter: the mop cloth has a three-layer design, the mop pad is thick enough and the chenille cleaning surface with upturned pile adheres completely to the floor to thoroughly clean the stains. The HEPA filter is made of high-strength, environmentally friendly materials that can block most of dust and dirt. Dust bag: Large capacity can absorb up to 7 weeks of dust and catch 99.7% of small particles that float into the air. Material: plastic : Package Contents: 2 x roller brush 4 x filter 4 x rag 4 x dust bag 6 x black side brush 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.