All hinges are gravity hinges which automatically closes a standard or ADA partition door. Most hinges are in stock for fast delivery. We offer chrome plated, cast stainless steel, stamped stainless steel and alumnium. For extra strength we recommend a full length piano hinge with a 1/4" pin. Replacing old hardware with new parts will change your bathroom's look to new again. All hinges come with security screws and fasteners for mounting. Surface mount hinges sets are easy to install on any material partitions in your restroom.