I used this to replace a bearing in a mule belt idler pulley on a John Deere 777 ZTR. Works perfectly. The pulley is now very quiet and much cheaper than a new pulley. Simply remove the 2 circlips, push out the old bearing and press in the new bearing, then fit the 2 circlips. Overall it took about 10 minutes after the pulley was removed from the ZTR.