ORIGINAL STIGA ORIGINAL belt pulley bearing flat groove for lawn tractor mower lawn mower models: 66 RDB - 727 M - 727 H 827 H - AM 66 - AT1 66 BT 66 - CM 7006 H - COMBI 1066 H RACER MB - RIDER 27 H - XE 966 HD : A: 73 mm B: 52 mm C: 22 mm D: 16,5 mm E: BEARING F: Flat groove Original code reference: 27604015 GGP