1.margin value:1.5,2.0,2.5mm 2.outer diameter:150~300mm 3.inner diameter :76mm 4.Aluminum/Zinc film with reinforced edge Al/Zn metallized filmSafety Anti-explosion Film Specificationitem unit nominal valuerollmmroll diameter inner diameter 75 outer diameter 150--350(The specific diameters can be customized. )thicknessµm3,4,5,6,7,8,9,10,12width×margin valuemmWidth:30,35,37.5,40,45,50,55,60,65,70, ...