Reese 45291 Titan Series Ball Mount Titan Weight Carrying Ball Mount. Ideal for marine, agricultural and recreational use. Fits 2-1/2 receivers. 7-3/4" drop. Ball mount cannot be used in the rise position. 10-1/2" length (measured from pin hole to ball hole) - 1-1/4" ball hole diameter 13,000 lbs gross trailer weight rating, 1,300 lbs tongue weight rating.