All of our new parts are aftermarket replacements. Replaces John Deere OEM Number(s) A51080, A30129. Replaces Mfg Number(s) WD29 WIESE. Compatible with John Deere New Universal (NU) Plow(s): NU350, NU400, NU450 Metric Series. Bolt Hole Dimensions: 7/16. Package Quantity: 6 / Box With Hardware. All States Ag Parts Item No.