Comprehensive Compatibility: Designed specifically For J4/J5 001, this kit ensures a and function for your robotic vacuum. Time for an Upgrade: Don't let worn or wheels compromise your for 's performance. Our high-quality replacement wheels are specifically designed to replace old, broken, or missing casters, restoring full mobility and enhancing your vacuum's operational efficiency. Simple Installation Process: designed for hassle-free installation without need for additional tools. The user-friendly design allows for quick and easy replacement, making maintenance a breeze and saving you time Premium Construction: Made with high-grade materials, this part not only promises but also guarantees robust performance under operating conditions. It's an essential upgrade for anyone looking to maintain their appliance in top condition. Function: Assisted sliding Use environment: Home use Model: For J4/J5 001 Colour: grey Material:plastic Package Contents: 1 x wheel 1 x bracket Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.