Mount onto trailers with an A-shaped tongue. Stronger than straight-tongue couplers. Features an easy-lock latch for easy operation. Steel construction with a durable gloss black finish to protect against corrosion, wear and tear. Accepts a safety pin or coupler lock. Constructed from die-cut, punched out steel. Protected by a durable gloss black powder coat finish. Mfr. 3 year limited warranty Fits A-frame trailer tongues & 2 5/16"" trailer ball (sold separately) Passes SAE-684 performance testing as a class 4 coupler Easy-lock latching system for simple operation | Curt A-Frame Class 4 Coupler in Black