Replacement slip clutch tension spring, fits Eurocardan FD0 - FD4 slip clutches. Most slip clutches will use 8 of these springs. Replace your worn or broken slip clutch springs with these new OEM clutch springs. If you need more than one spring simply increase the purchase quantity to the number you need. Specifications: 6 mm clutch spring Fits FD0, FD1, FD2 and FD4 slip clutches Made in Italy by Eurocardan, may fit other brands If you are not sure if this unit will fit your mower please contact us and we will be glad to help make sure this will fit. We sell many replacement rotary cutter parts. 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. Replaces Part Numbers: 1215012 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.