MowerPartsGroup (1) Replacement Drive Disc for Snapper 7018782SM Ariens 00170800 John Deere AM122115 ID: 3"; OD: 6" Replaces Ariens: 00170800, 00300300 Replaces John Deere: AM122115 Replaces Troy-Bilt: 1720859 Please see Product description for full details