#1 100% stainless steel door hinge 3 pieces with 24 stainless steel self drilling screws (for longer durability) easy to install through hard obstacles. #2 Fine grade steel. #3 Corrosion resistance. #4 Moisture free. #5 Standard gauge- 2.5mm. #6 Appropriate quotation. #7 Five knuckles for extra smoothness & strength. #8 Designed on euro quality standards. #9 Fire tested under special conditions. #10 Specially designed & packed for quality preferred. #11 Full mortice hinge. #12 Suitable for both sides out-swing & in-swing Movement of door. #13 Flat heads so you can lubricate without pin removal low maintenance #14 Corrosion tested under standard measures. #15 Applicable on both doors interior & exterior. #16 Security hinges non removable pin sealed with set screw in pin, secure from outside as well as inside, no one can remove pin even door opened also without removal of security set screw loosening, In other security bolt hinges pin is removed from both side (This creates unnecessary hassle to buyers when to find exact size of pin & door you can't hang without inserting pin again). #17 Pin dia 11mm. #18 Stainless steel material is much stronger & durable in all metals (Steel, Brass, Aluminium or Zinc). Now days maintenance & services costs too high to bear, So everyone demands durable material products with low maintenance & maximum utility in their high end premises.