4-Inch x 4″, Stainless Steel Square Corner Door Hinge, Full Mortise, Designed For Industrial, Commercial & Residential Doors, Especially In Marine & Other Outdoor Applications, Stainless Steel For Maximum Corrosion Protection, Non-Rising Pin, Removable Pin For Easier Installation, Heavy Gauge Material For Added Strength, NIB On Bottom Of Hinge For Finished Appearance, 1 Per Pack, Carded.