360/380 Matching AdaptabilityWith the attribute of durable and high density fits for Polaris belt replacement kit, absolutely compatible with for Polaris 360 and for Polaris 380 automated pool cleaners replacing for OEM P/ No. 9-100-1017. Long Service Life The service life of the belt replacement kit under normal operation is very long, the belt material is very strong, the capacity load-bearing and working strength are very good, and it is not easy to damage it. Reinforced belt designDesign details are excellent, reinforced belt design. The outer rubber shell provides flexibility while the inner reinforcement cords provide endurance against stretching and breaking. It is non-toxic and very safe. Ease of UseRemove old Polaris belt and replace with our new belt and twist slightly when worn to maximize life. For Polaris belt replacement kit. No damage will occur in normal operation, 2 belts (small and large) packed, meet most customer requirements. Premium materials The material is polyurethane, a belt design reinforced, more flexibility and more endurance against stretching and breaking.