Sight Lights Door Hinges, 4" x 4", Extruded Solid Brass, Ball Bearing, Polished Brass (US3), Stainless Steel Pin, Included 3 types of tips /finials (Standard Button, Ball, and Urn) - Set of 2 Hinges. Extruded Solid Brass Door Hinges, high quality, provides strength and performance. Stainless Steel Pin, NO rusting, always a smooth movement. Extremely durable finish. Ball Bearing Hinges which can handle heavy doors. Conform to the most current specifications established by the American National Standards Institute (ANSI).