... 4)a crown:16.7mm, 5)wire dia:1.6mm staple Nail book needle size: 10 #, unified (24/6), 26/ ... staplesSupply staples series, hull paperclips series, triangle paperclips series, butterfly paperclips series, kits more paper clips series, pin series, two JiaoDing series, safety pins series, pushpin series, long tail ... of zinc alloy as antirust, wire insideHave Fe C S P Mn Si, and a small number of Cu etc, ...