Trailer Coupler With Electro-polished/Zinc-plated Surface Finish Material: AISI304/St37-2Surface Finish: Electro-polished/Zinc-platedBall Channel: 1-7/8 x 2-inch, 1-7/8 x 2-5/16-inch, 1-7/8 x 2-1/2-inch, 1-7/8 x 3-inch, 2-inch x dia.60, 2 x 2-inch, 2 x 2-1/2-inch, 2 x 3-inch, 2-inch x A Type, 2-5/16-inch x A TypeM.B.L: 2,000, 3,500, 6,000, 5,000 And 10,000lbs Trailer Coupler