AR-PRO offers the perfect track replacements of Poolvergnuegen 896584000-143 in ground pool cleaner for less cost from the OEM yet is made of premium, heavy duty rubber Model number - 896584000-143 with outer diameter 6 inches and inner diameter 5.5 inches GUARANTEED PROPER FIT: Our parts are approved by the mechanic to ensure the quality meets or exceeds the OEM 896584000-143 EASY INSTALLATION: No tool required, it takes less than 5 minutes to replace all tires