... 4.Strict inspection before shipment Double open brass lock cylinder: 1)Material: Brass, Zinc Alloy, Iron, Al, etc. 2)Style: Single, ... , Schlage C,Sega19,Weiser,Yale 8, Computerized Key , iron key or brass key ( 3pcs /set , 5pcs /set) 5)Lock ... core: brass or zinc or steel 6)Sealed bead: brass and iron ( we can do 5 or ... Common key9)Remark: 6 pins, 5pins Single open brass lock cylinder