Features a continuous intricately folded design to more evenly distribute wear and minimize flex fatigueFits both inner and outer joints on both front and rear axles for unmatched coverageIncludes four Fast Boot X and two standard Fast Boots IIMade from premium quality rubberMade in the USAPerfect for ATVs and UTVs with extended suspension axles as found on Polaris RZR's, Can Am Mavericks, and many other off road vehicles.