One replacement bearing for Exmark Mowers, codes 303543 / 1-303543. Bearing measures 25mm ID X 62mm OD X 17mm thick. Exmark mowers will use two of these bearings in each blade spindle. Bearing specifications as follows: Inside Dia: 25mm Outside Dia: 62mm Thickness: 17mm If you are not sure if these will fit your mower just send me an email with your model number and I will be happy to confirm them for you! One day handling and free shipping! We have more lawn and garden items available than we have time to list them. If you don't see the parts you need listed please contact us we would love to earn your business. We are listing new items frequently so please check back often.