Trailer Ball Vehicle Class V Ball Diameter 2 5/16 in Gross Towing Weight Capacity 20 000 lb Gross Vehicle Weight Capacity 20 000 lb Material Steel Finish Chrome Features Fine Threads Limited Lifetime Warranty (1 yr Finish 1 yr Parts) Zinc-Plated Hex Nut and Helical Lock Washer for Mounting Ball Type Trailer Ball Resistance Properties Wear-Resistant Shank Diameter 1 1/4 in Shank Length 2 3/4 in Standards VESC V-5