A-Frame trailer coupler, 2 5/16" ball, fits A-Frame style tongue, Class IV, 10,000 lbs. rating with the most popular coupler mechanism ever developed, the Fas-Lok originated as a Fulton brand and is offered in a full line of SAE Class I through IV rated straight tongue stamped couplers. The Fas-Lok latching mechanism allows quick and easy trailer hook-up, and is factory adjusted for convenience. Black primer finish, Weld-On installation. 2 5/16" ball, fits A-Frame tongue, Class IV rating of 10,000 lbs. Fas-Lok latching mechanism allows quick and easy trailer hook-up, and is factory adjusted for convenience Black primer finish to resist corrosion Ideal replacement coupler for RV and utility trailer Limited 5 Year Warranty MODEL NO - E443050303