1)Material:iron 2)Size:100*75*2.5mm 3)Finis:SN,PB,CP,SB,AB,AC,etc 4)Flat ... of professional experience in this area. it needs to pass 3 inspections before assembly. 80% stable employees works for our factory ... ;2)Size:100*75*2.5mm,100*75*2.0mm;3)Hinge with flat or crown head;4)Fixed or loose pin ... 0.1 million times10)Hinge bearing weights : Thickness 2.5mm: 30 to 40kg ,3.0mm: 50 to 60kg ,3.5mm: 60 to 80kg ...