This Key Receiver Lock is made with a rugged black epoxy powder coated finish, has a 5/8 x 2-3/4 span, and fits all Class 3 & 4 receiver hitches.Easy 1/4 turn locks & unlocks head. Can’t pop open or be falsely locked. Machined hardened steel, new improved triple plated chrome finish. Fits all Class III, IV & V receiver hitches.