Andersen Hitches RAPID HITCH 3405-25 | 6" Drop/Rise with a 2" x 2-5/16" Greaseless AlumiBall Combo | FEATURES 2-1/2" Receiver 6" Drop, 6" Rise with 2" x 2-5/16" Greaseless AlumiBall Combo Ball | 2-1/2" Shank IMPROVED Towing Capacity: 2" Ball - 10,000 lbs; 2-5/16" Ball - 12,000 lbs Rapidly Adjusts: Pull Pin, Adjust Height, Slip Pin Back into Place --&gt; DONE! Aluminum Rack Won't Rust, Peel, or Chip; Greaseless AlumiBall - No Need to Lubricate Tow Ball and Trailer Receiver! Fits 2.5" Receivers. For 2" Receivers, You Need the Rapid Hitch #3405