1. Thickness:106-112 um 2. Brightness: 92%--96% 98%--100% 102%--104% 3. Opacity: 90% and above 4. GSM: 70,75,80 available. Key PerformanceIt’s suited for photocopy Machines, Ink-jet printers, Laser Printers , and Fax MachinesNice touch-smooth and bulkyStay flat after copyingLeave no dust in the copy-machineNo see through-print both side, no jam in photocopy machine 80gsm a4 copy paper