1.Model:CL-225 2.Material: zinc-plated low carbon steel ,concealed hinge, 3.simple and convenient ... :CL-2252.Material: low carbon steel, nickel-plated,concealed hinge,3.zinc plated low-carbon steel concealed cabinet door hinge4.Materials ... steel, galvanized protective coating increases Pin: low carbon steel, nickel-plated Springs: carbon steel, passivated5.Uses: interior concealed hinge, installation ...