ACCO Ideal Paper Clamp (Butterfly Clamp), Smooth Finish, No.1 Size (Large), 12/Box (A7072610) Go to amazon.com Related posts Top 10 best ideal clamps FeatureButterfly shapeDesigned to minimize paper tearingLarge #1 size clamps hold up to 150 sheets12 paper clamps per box DescriptionLarge butterfly paper clamp is strong enough to holds up to 150 sheets. The design of the clamp prevents paper from tearing. 12 paper clamps per box.