Gooseneck Coupler Coupler Style Gooseneck Vehicle Class IV Gross Towing Weight Capacity 25 000 lb Gross Vehicle Weight Capacity 25 000 lb Compatible Ball Diameter 2 5/16 in Compatible Pin Hole Diameter Not Applicable Material Steel Finish Primer Overall Length 8 in Resistance Properties Corrosion-Resistant Weight 58.75 lb Tongue Width Not Applicable Color Gray Compatible Product Type Adjustable Gooseneck Coupler with Cast Locking Plates