... ) Fine quality 4)acrown:16.7mm, wire dia:1.6mm staple Nail book needle size: 10 #, unified (24/6), 26/6, thick ... of iron, still have a kind of were of brass.Nail book needle size: 10 #, unified (24/6), 26/6, thick ... , American book needle B8, B88.Book needle specification: 10 # book machine two needles wide for 8.4 mm, high for 5mm ... nails, c staples, C nails.industrial staples nails C Ring Staple(nail)