... 10 years 1)Material: brass ;2)Size: 70mm,and 60mm,65mm,75mm,80mm,90mm,etc is also welcome;3)Finishes ... ;5)Lock cylinder with knob or double open ;6)Screw: 60mm, half whorl ;7)T-cam: 30 or 0º ;8 ... )Marbles: 1 or 2 rows ;9)60mm with 5 holes, and 70 to 90mm with 7 holes ... producing cylinders, it is about 150,000 pairs per month. Door cylinder, Euro profile cylinder, Brass cylinder, lock cylinder