Trailer Ball Vehicle Class III IV Ball Diameter 2 in Gross Towing Weight Capacity 7 500 lb Gross Vehicle Weight Capacity 7 500 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 Color Silver Resistance Properties Rust-Resistant Scratch-Resistant Shank Diameter 1 in Shank Length 2 1/8 in Standards VESC V-5