CURT 48006 - Receiver-Mount Ball & Pintle Hitch (2" Shank, 2-5/16" Ball, 12,000 lbs.)Receiver Mount Ball & Pintle Hitch (2" Shank, 2 5 16" Ball, 12,000 lbs.) Fits trailer hitches with a 2" x 2" receiver tube opening Couples to 2 5 16" couplers or lunette eyes with a 2 1 2" or 3" inside diameter Spring loaded locking arm for secure coupling Constructed from solid, forged steel for superior strength Protected by a durable powder coat finish Changeable trailer ball features a hard chrome finish Safety pin included for added security