u616 rubber gasket binding clips dual-use bookbinding machine

U-shaped processing is easier to drill holes.
All available pins can punch through paper smaller than A4 size.
Maximum stamping: 20 sheets of 70g paper
Maximum bundle: 450 sheets of 70-gram paper
Hole quantity: 21 pieces
Bore Size: 3 * 8mm Rectangular
Pitch: 14.3mm
Paper Edge: 2.5 / 4.5 / 6.5mm
Net weight: 8.5 kg (each machine with a color box)
Gross Weight: 19 kilograms (2 pieces per box)