Tell manufacturing's heavy duty solid stainless steel commercial grade door hinge with 2 ball bearings and Non-Removable Pin (NRP). Typical used on 1-3/4 inch thick out-swing exterior doors. Non-Removable Pin for exterior outswing doors, prevents the hinge pins removal for security. Prime coat ball bearing hingesComplies with ANSI A156.1Square corner and 0.134 gauge steelFurnished with wood and metal screwsRemovable pin for use on interior doors