Enhanced Navigation Sensors: Equip your For Q55 with cliff sensors for improved navigation and safety. These essential accessories prevent your vacuum from falling off stairs and ledges, ensuring a safe and thorough cleaning experience. and Reliable: Designed specifically For Q55 , these sensors are built to last, providing long-lasting functionality and reliability. Keep your vacuum running smoothly with these must-have replacements. Easy Installation: The cliff sensors are easy to install, allowing for a quick and hassle-free replacement process. No professional help required, Specification:L+R Colour:As Shown Material:Metal Package Contents: 1 x Cliff Front Impact Assembly Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.