Improved front wheel with screw, compatible with Roomba 500, 600, 700, 800 and 900. Robot vacuum compatible with iRobot Roomba. Improved accessories and spare parts.--DTEKGAZ

We have many years of experience selling brand-name robotic vacuums and spare parts. This set includes an improved front wheel, compatible with Roomba models 500, 600, 700, 800, and 900. A worn front wheel can damage other components of the robotic vacuum over time. All products in this package come with a manufacturer's warranty.