5/16inch 7.9mm 100sheets Wire Coil Supply for Binder Machine 36-50 Pages Note 7.9mm 5/16inch Metal Wire Coil Supply Parameter: Binding capacity: Pages 36-50/20Lb(80g) Paper Pitch: 3:1 / 34holes Length: 11.8" 300mm Color: Black Quantity: 100pcs/pack Net Weight: 1.65Lb (0.75Kg)