To keep Shark Robot Vacuum running at best performance, it is recommended to replace the replacement parts every 2-3 months. Compatible Model: This side brush replacement compatible with Shark ION Robot RV750,R75,RV700,RV720,RV750C,RV755 Vacuum Cleaner. Care instructions: Machine Wash Descriptions: Suitable for: Shark ION RV720 RV750 RV750C RV755 Designed to fit Shark ION RV720, RV750, RV750C, RV755 Models Keep your shark ion vacuum robot running at peak performance by changing the consumable brush replacement every 23 month, depending on your use frequency. Over time your vacuum attachments take a beating on the job, so replace them with the Shark Ion Robot Replenishment Kit. This kit replaces the attachments for your Shark Ion Robot vacuum to ensure you're always cleaning at maximum efficiency. Please note：This product not applicable for RV750_N 32, 720-N，RV700_N 32