General description These 12 Pack Robot Tail Foam Brushes are designed for effective cleaning of various Polaris pool cleaners, including models 180, 280, 360, 380, 480 Pro, and 3900 Sport. They are compatible with Polaris part numbers 91003105, 9-100-3105, and PP-91003105. Technical specifications Outer Diameter: 4.3 cm Inner Diameter: 1.4 cm Length: 7.3 cm Installation Replacing the worn tail scrubber is simple; just install the new tail brush onto the hose tail. Usage The absorbent filter sponges feature uniform parallel holes that effectively capture large debris and particles, while also scrubbing the bottom and sides of the pool. Other information Includes 12 foam brushes, providing excellent value as they do not need to be changed every week.