attwood 11029-6 Zinc-Plated Steel Trailer Safety Coupler Locking Pin Solid steel; zinc-plated to withstand harsh salt or fresh water conditions Fits both 2-inch and 3-Inch couplers Pin dimensions: 2-1/4 inch wide, 1-5/8 inch long Quick Connect and disconnect design saves you time and hassle Attwood develops high value, engineered marine products to make life on the water easier to enjoy Solid zinc-plated steel 2 1/4" wide x 1 5/8" long