Model Style: 3:1 Wire O Binding Machine
Punching Capacity: 12 sheets
Binding Capacity: 120 sheets thick
Wire size: 3/16'', 1/4", 5/16, 3/16, 7/16", 1/2", 9/16"
Hole Count: 34 Punching Holes
Hole Dimensions: 4x4mm clean square holes
Adjustable Side Margin: 3mm / 5mm / 7mm
Paper size: A4, A5, and Letter