The replacement parts are compatible with the Combo j7+ Self-Draining Robot Vacuum and Mop. Not compatible with the j7+ Robot Vacuum. The side brush helps you get deep into corners, up to walls and baseboards, thus a superior cleaning area. Please maintain it once a week (twice a week with pets at ) and replace it every 3-4 months. Color: Green Material: Plastic Package Contents: 36 x 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 a little different from the real thing. The measurement allowed error is +/- 1-3 cm.