this listing is for one (1) retaining ring. Use this retaining ring to correctly retain bearings and position gears inside your gearbox. There could be three of these retaining rings inside your gearbox. Replace your bent or damaged rings to ensure secure fitment and reduce the chance of gearbox damage. See position 6 in the attached drawing. We sell many replacement parts for the most manufacturers rotary cutters. 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 our store often. Specifications: 40mm retaining ring We stock a wide variety of replacement parts for Agricultural Equipment please contact us if you have any questions or if you would like more information. Code 21-012