:Compatible: Shark ION Robot RV700 RV720 RV750 & RV755 Robotic Sweeper and Vacuum Cleaner :Replacement Main Rolling Brush compatible with Shark ION Robot RV700 RV720 RV750 & RV755 Robot Sweeper Keep your home clean by changing the brush frequently - once every two month, depending on usage Easy to install. No tools required MTP Brand Main Rolling Brush Replacement Parts for Shark ION Robot RV700 RV720 RV750 & RV755 Sweeper and Vacuum Cleaner (157mm) in length