Tahoe Model Works trucks feature one-piece black acetal plastic moldings with separate brake shoe detail, and non-magnetic, insulated metal 0.110" wide RP-25 contour wheelsets. This version of the swing motion caboose truck was manufactured from 1935 to the late 1950s. Originally a proprietary product of the Bettendorf Co., in 1942 the manufacturing rights were acquired by Standard Car Truck Co., who then added their trade name Barber to this truck's name. The prototype had 4-1/4"X 8" axle journals (30 ton capacity), plain bearings and a 5'6" wheelbase. Over forty railroads used this caboose truck.