√ PERFECT Compatibility: Scrubbers replace polaris (parts 9-100-3105, 91003105), perfect for Polaris, Vac-Sweep or vacuum auto pool cleaners, including Polaris 180, 280, 360, 380 , 480 and 3900 Sport & lt; br>Easy to install: just remove the worn scrubber. and replace it with a new scrubber. To maximize the life span of the sweeper, rotate it slightly during transport Upper Quality: Scrubbers are made of high quality filter foam. .— This is not an original part √Size: 1.75 inch outer diameter; Inner diameter: 0.5 inch; Length: 2.75 inch √Package includes: 12pcs hose washer dryer