... onto spines of rings silkscreen printed Black Plastic PVC Binding Comb Factory Specification ApplicationIt is suitable for professional books, ... , all of your presentations, proposals, reports, manuals binding.MaterialPVCSize6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm, ... , 84rings, etc.Regular specification for 21 Rings Plastic Binding Comb: SizeInchPcs/BoxPcs/CartonCBM/CartonG.W/CartonN.W/Carton 6mm1 ...