This listing is for one replacement friction disc for Comer PTO Slip Clutches. These friction disc have and outside dimension of 152mm or 6.0" and an inside dimension of 102mm or 4.0". Depending on the application two or four of these disc are used, simply increase the quantity to purchase to meet your needs. Please measure your old clutch to ensure fitment before purchasing this item. Specifcations: OD: 152mm or 6.0" ID: 102mm or 4.0 Replaces: 180017106 Fits models: Comer RF2: Type 40 Comer RF2: Type 50 Comer RF3: Type 40 Comer RF3: Type 50 Comer RF4: Type 40 Comer RF4: Type 50 Comer RF5: Type 40 Comer RF5: Type 50 Comer RF6: Type 50 Comer RF6: Type 60 Comer RF6: Type 80 Comer RF6: Type 90 Comer RF7: Type 50 Comer RF7: Type 60 Comer RF7: Type 80 Comer RF7: Type 90 Comer RF8: Type 50 Comer RF8: Type 60 Comer RF8: Type 80 Comer RF8: Type 90 Comer RF9: Type 50 Comer RF9: Type 60 Comer RF9: Type 80 Comer RF9: Type 90, 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. 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.