Threaded Shank Lunette Ring Gross Towing Weight Capacity 15 000 lb Ring Inside Diameter 2 1/2 in Ring Outside Diameter 4 1/4 in Mounting Bracket Included Yes Number of Mounting Holes 1 Distance Between Mounting Holes Not Applicable Mounting Hole Diameter 1 1/2 in Material Steel Features Easy to Adjust Perfect for Hauling Heavy Loads Includes Bolt-on 1 1/2 in Threaded Shank Mounting Hardware Resistance Properties Rust-Resistant Finish Primed Overall Length 9 in