General description Replacement Sponges Foam Brush for Polaris models 180, 280, 360, 380, 480 Pro, and 3900 Sport. This pack includes 12 foam brushes designed to effectively capture large debris and particles while scrubbing the bottom and sides of the pool. Technical specifications Outer Diameter: 4.3 cm (1.7 inches) Inner Diameter: 1.4 cm (0.55 inches) Length: 7.3 cm (2.87 inches) Compatibility and accessories Compatible with Polaris 180, 280, 360, 380, 480 Pro, 3900 Sport Works with Polaris part numbers: 91003105, 9-100-3105, PP-91003105 Usage Simply replace the worn tail cleaner with a new tail brush at the end of the hose. These absorbent filter sponges are designed for easy installation and effective cleaning. Other information