Door hinge 1.stainless steel hinge 2.thickness 2.5mm 3.mother and son hinge STAINLESS STEEL DOOR HINGE 1.HIGH QUALITY MATERIAL:STAINLESS STEEL OR THE COPPER2.HIGH QUALITY BEARING,HIGH LEVEL RESITANCE,DURABILITY OF SEVERAL YEARS3.THE SURFACE TREATMENT COMBINES THE SPECIAL MACHINE-FINISHING AND POLISHING CRAFT,WHICH MAKE COMPLETELY AMUSING COLOR stainless steel door hinge