... : SC-660 2) Application: Pocket spring mattress 3) Fine quality 4)a crown:16.7mm, 5)wire dia:1.6mm staple Nail ... book needle size: 10 #, unified (24/6), 26/6, thick layer ShuDing: 23/8, 23 ... were of brass.Nail book needle size: 10 #, unified (24/6), 26/6, thick layer ShuDing: 23/8, 23/10, 23/13 ... nails, c staples, C nails.industrial staples nails C RING STAPLE(SC-660)