General description These 20 Packs Robot Tail Foam Brushes are designed for use with various Polaris pool cleaner models, providing an effective solution for maintaining cleanliness in your pool. They are specifically compatible with Polaris 180, 280, 360, 380, 480 Pro, and 3900 Sport models, ensuring a perfect fit and optimal performance. Technical specifications Outer Diameter: 4.3 cm Inner Diameter: 1.4 cm Length: 7.3 cm Installation Easy to install: Simply replace the worn tail scrubber with a new tail brush at the tail of the hose. Usage EFFECTIVE CLEANING: These filter absorbent sponges contain uniform parallel holes to effectively capture large debris and particles, enhancing the performance of pool cleaners. They also help scrub the bottom and sides of the pool. Other information Great value for money: 20 x foam brushes, no need to change every week.