4” x 4” Square with 5/8” Radius Corner Stainless Steel - 304 Grade Gauge: 2.5MM, (.097" ) For Door Thickness: 1 5/8" to 1 3/4". Includes matching stainless screws. These hinges are reversible as the pin is removable and can be used for left handed and right handed doors. Security tab hinges are great for outswing doors and the hinges cannot be removed when the door is in a closed position.