Suitable for 1600PA D380 D382, ( 2000PA) of F007C, ( 2100PA) of J10C, R3500 R3500S R550 (R500+) R650 R600 R700 DK600 BG600 Robot Vacuum Cleaner The of the bristles is smooth and wear-. During the cleaning process, the bristles are not easy to bend. Similarly, because the bristles are long and thin, they can be used to deeply clean the space between the floor and . [Easy to install] Since our replacement parts are fully compatible with your vacuum robot, the installation is the same as the vacuum robot, and it can be easily installed and used! P.S. Don't worry if the side bristles are bent during installation. This is not a quality issue, but some transportation issue. You only need to soak it in hot water for 15 seconds to recover. It can be easily removed and replaced as part of routine maintenance It is recommended to replace spare parts every 2 to 3 months according to the frequency of use to keep the machine at its best performance. Made of high-quality materials, and practical colour: blue + black Material: plastic + fiber Package Contents: 1 x roller brush 2 x filter 4 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.