4 in. Solid Brass Square Corner Security Door HingeThe Everbilt 4 in. Square Corner Security Door Hinge features a 5 knuckle full mortise design. The removable pin provides easier installation or removal of door. Easy to install. California residents see Prop 65 WARNINGS Made of solid brass Solid brass finish Screws included Perfect for use on interior residential doors Removable pin provides easy installation or removal of a door Includes detailed instructions Features Item Weight 0. 5 Mounting Type