This bushing is used in EBS SECONDARY clutch applications as the movable sheave bushing for many Polaris 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 60mm OD x 12.5mm tall. Sold Each. Exact replacement for Polaris part number 3585710. Fits the following models and more: 1998-07 Sportsman 500 (EBS Models only) 2003-05 Sportsman 600 2002-04 Sportsman 700 1999-01 Worker 500 1999-02 Diesel