Alpha One Gen One Shift DogAlpha One Gen One Shift Dog Shift Dog is in good shape with minor discoloration. Product came from a good working lower unit with only minor imperfections from normal use. Listing also comes with retaining spring. Splines are in great shape; the spline count is 21. Product was removed and inspected by a certified marine technician. All orders are shipped after payment is made Monday thru Friday. No hassle 30 day returns.