1)Material:iron 2)Size:100*75*2.5mm 3)Finis:SN,PB,CP,SB,AB,AC,etc 4)Flat head 5)Useful ... about 450,000 pairs per month. Crown iron hidden hinges for wooden door1)Material: iron SPHC;2)Size:100*75*2.5mm ... ,100*75*2.0mm;3)Hinge with flat or crown head;4)Fixed ... OPP bag, 2pcs/box and 100pcs or 50 pairs/carton. Iron door hinge with crown head