... /Aluminum 3. 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. ... , public area..5.Finish:PB,GP,AC,AB,SN,NP,CP ect. high quality brass cylinder, profile cylinder, Euro profile cylinder ...