This B-10 replacement hose wear ring works with all your Polaris automatic pool sweep cleaners including the 180 280 360 380 and 480 models. It is an original factory replacement part and protects your cleaner tail hose from wear and tear as it s pulled along the bottom and sides of your pool while your automatic cleaner system works cleaning your pool. The rings easily slip over your hose and are made from durable rubber for long-lasting use. Zodiac Swimming Pool Systems and Products have proven over and over to be among the leaders in the industry for all types of applications. By using only the highest quality materials and manufacturing customers can be assured that they are receiving only the best products. Our best in class consumer products are the number 1 choice for millions of pool owners and professionals worldwide and with our expansive product line we deliver the most technologically advanced energy-efficient durable and reliable pool and spa products available on the market.