These classification folders are made of 25 pt pressboard and come with 4 filing sections. The front and back panels have standard 2″ metal prong 2-hole document bonded fasteners. The 17 pt Kraft divider has 1″ dual prong 2-hole document fasteners in positions #1 and #3. These folders also feature a 1/3 cut side tab in position #2 for filing in drawers and a 2″ Tyvek expansion.