Improved Accessibility: These threshold ramps significantly enhance your robot vacuum cleaner's ability to navigate between rooms with different floor heights. You avoid getting stuck in doorways or struggling with small steps. The ramps provide a smooth transition, allowing your robot to clean your entire home efficiently and without interruption. This ensures a more thorough and consistent cleaning performance, saving you time and effort. Universal Compatibility: Designed to be compatible with a wide range of robot vacuum cleaners, including Xiaomi, Roborock, Ecovacs, and Narwal. These ramps offer a versatile solution for homes with various robot vacuum cleaners. Their universal design ensures a comfortable fit and reliable performance, regardless of the specific model you own. Enjoy seamless integration and improved cleaning performance with your existing robot vacuum cleaner. Robust ABS Construction: Made from high-quality ABS material, these threshold ramps are built to withstand daily wear and tear from robot vacuum cleaners. The robust construction ensures long-lasting durability and reliable performance. The ramps can easily bear the weight of your robot vacuum cleaner without bending or breaking, providing a stable and secure transition between floor surfaces for years to come. Specifications: Color: Black Size: Length: 68.6 cm, Width: 5.1 cm, Height: 1.72 cm Material: ABS Package includes: Threshold ramp x 4