3.25", Stainless Steel Receiver Lock, Fits Late Model, Ford F-20 & 350 HD Equipped With 2.5" Receivers, Fits Late Model Gm Trucks Equipped With Heavy Duty Tow Packages, Fits Late Model Toyota Tundra's Equipped With Heavy Duty Tow Packages, Swivel Head Design Allows Easy Access, Resists Corrosion, 5/8" Solid Ss Receiver Pin.