... crown:16.7mm, 5)wire dia:1.6mm staple Nail book needle size: 10 #, unified (24/6), 26/6, thick layer ... iron, still have a kind of were of brass.Nail book needle size: 10 #, unified (24/6), 26/6, thick layer ... , 23/17, 23/19, 23/23, American book needle B8, B88.Book needle specification: 10 # book machine two needles wide for 8.4 mm ...