This bushing is used in Standard and EBS secondary clutch applications as the movable sheave bushing for many Polaris Sportsman ATV's. This bushing is constantly moving and so it wears out quickly, replace it before it does more damage to your clutch. Made of steel with a super smooth Teflon inner coating. Size is approximately 42 mm OD x 25.3 mm tall. Sold Each. Exact replacement for Polaris part number 3576511. Fits many 1990-2013 Polaris Magnum, Ranger, Hawkeye, Diesel, Big Boss, Scrambler, Trailblazer, Trailboss, Xplorer, Xpress and Sportsman models. Does not work on Team roller secondary clutches.