Bonanza/Baron Collapsible Tow Bars. Three styles available. 1: Tow Pin style. (Pn: 046a). Built for travel and for use. 2: Axle style (Pn: 046b). Built for travel and for use. 3: Deluxe Tow Pin Style (Pn: 046c). Lever and Spring action for easy tow pin attachment. Heavy duty. Built for travel and for use.