Description CURT 1/2" hitch pins measure a full half inch in diameter and are constructed from solid steel. This helps ensure they have the strength they need to serve your towing needs. Our 1/2" pins are available in a number of finishes to give you options for your specific vehicle and trailer hitch.1/2" hitch pins will fit any CURT ball mount or hitch-mounted accessory with a 1-1/4" shank.