Description Clutch disc (Rockford style), 6-1/2" diameter, 15/16" hub, 10 spline, organic lining. Tractors: Cub, Cub Lo-Boy. This item is a suitable alternative for the following: 351773R91, 1712-7009, 17127009, 351773R1, 758310, A534230, A-4010583, A4010583, SAT25