Trimax Keyed Alike Receiver and Coupler Lock Set Fits Class III Trailer Receivers (Includes TC1 and T3) 

"Easy operation - 1/4 turn locks & unlocks head. Can't pop open or be falsely locked. Exclusive design incorporates O-Rings and water tight cap to help seal out dirt and corrosion in the lock head mechanism. Full length solid forged lock pin can't pull out. Fits Class III trailer receivers (2" x 2")."

Includes: "TC1 (1/2"- 7/8" span) and a T3: 5/8" x 2-3/4" rod", Finish: Stainless

Sold: Each