metal fasteners,distance of two holes:80mm 50pcs/box, 80boxes/ctn.High quality at reasonable price. Model 308080mm paper fasternersQTY: 50PCS/box 80BOX/ctn MODEL NAME SIZE(MM) SHEETS QTY MEAS(CM) G.W N.W 3080 paper fasterners 801080 40.8x32.2x34.2 19 18 If you are interested in our products,please feel free to contact us.And we will provide a sample and price list for your reference.