Chrome-edged interior door hinges are made from Zamak, which is an alloy of aluminum, magnesium, and copper, has a lot of strength and durability. It has a chrome finish and is designed to fit on the inside of doors. It has the capacity to support large weights but is designed for medium-sized doors. Each package contains all 100 pieces . Its installation is simple and does not require more than screws and a screwdriver to apply pressure.