The Roborock MKT04RR is a genuine accessory ramp set designed to help robot vacuums navigate raised thresholds, thick rugs, and floor height differences. Made of durable plastic, the ramps feature a universal design that helps older or standard robot vacuums climb over transition strips or thresholds without getting stuck. Shock Absorption: Creates a smooth, stable incline, which reduces impact on your robot's wheels. The Roborock Ramp Set is a practical accessory for vacuum robots, specifically designed to help robots cross different heights and thresholds. This ramp solves that problem by creating a smooth, stable incline your robot can easily climb. By reducing sudden impacts and improving traction. Expandable, up to 27" width.