JUNSUNMAY For Ecovacs / iRobot / Mijia / Dreame Sweeping Robot Universal Threshold Bars Ramp Mat(Black)1. Replacement threshold ramp kit, designed to assist robot vacuum cleaners in entering and exiting rooms with thresholds 2. Designed with rounded edges, it has comprehensive climbing capabilities and can smoothly cross obstacles 3. Includes multiple modular parts that can be assembled according to specific needs, providing flexibility and customization 4. The wavy design enhances grip, reduces the possibility of slipping, and improves the mobility of