... 4.Weight:30KG WT-21 Manual Book Corner Angle Cutter Notching Machine The specifications as follows , WT-21 Manual Book Corner Angle ... Cutter Notching Machine Thickness50mmRadius of cornerR=2,2.5,3,4,5,6 ... (Net/Gross)30kg WT-21 Manual Book Corner Angle Cutter Notching Machine Widely used to cut corner on cards, notebook, book etc ...