... . Finish: PB/SN/CP 4. Double open or single open 5. OEM welcome Brass lock cylinder1.Material:Brass,stainless steel, ... Alloy,Zinc alloy,Aluminum.2.Lock cylinder length(mm):30,40,50,60,70,80 ... ,ect.3.Keyway:E-computer key,S-normal key.4.Used in general lockset, say residents, public area.. ... high quality brass cylinder, profile cylinder, Euro profile cylinder, lock cylinder