... , brass( 3pcs /set , 5pcs /set )Pin : brass and stainless steel with anti-drill pinsHoodle: brass and iron ( we can do 5 ... (normal key) and Computer keyLock cylinder type :with double keyholes ,bias or no bias.With single keyhole bias or no bias (another ... cylinder body, zinc core/brass core, iron hoodle, iron normal/computer keys.Low-grade device : iron/alunimun/zinc body, zinc alloy core, iron hoodle ...