Stanley Hardware S821-058 RPF191 Standard Weight, Non-Ferrous Hinges in Satin Stainless Steel, 2 pack Authorized Replacement from National Hardware Stock #N236-148 22 pack; Interior or external doors Equipped with two permanently lubricated non-detachable ball bearings Template screw hole location for use on either wood or hollow metal doors and frames Equipped with easily seated, non-rising pins; Five knuckle, full mortise design For medium weight doors of average frequency Interior or external doors Template screw hole location for use on either wood or hollow metal doors and frames Lifespan Limited Lifetime Warranty Template screw hole location for use on either wood or steel doors