Global Door Controls 3 in. x 3 in. Satin Brass Plain Bearing Steel Hinge with 5/8 in. Radius -  Set of 2 Full Mortise Residential Grade: 5/8-Inch Radius Corner Standard Template hole locations; packed with 3/4-Inch by No.9 flat head wood screws Steel base material with steel pin with Plain bearing removable pin Recommended for use on 1-3/8-Inch hollow or solid core interior doors Conforms to ANSI-A156.1 and ANSI-A156.17