MaxPower 12675 Flat Idler Pulley Replaces: Cub Cadet 756-04129B, 756-04129C, 956-04129, 956-04129C; MTD 753-08171, 756-04129B, 756-04129C, 956-04129, 956-04129C Fits: MTD 38", 42", 46" and 54" decks Height: 1-1/8";ID: 3/8";OD: 4 1/4"