Heavy Wall Thickness Paper Core:Max.wall thickness 25.4mm, specially processed wall up to 50mm.. Heavy Wall Thickness Paper Core: Max.wall thickness 25.4mm, specially processed wall up to 50mm, satisfied in special winder of electronic glassfibre and non woven cloth. Pls advise ID,Wall Thickness,Length,Usage,Crush Strength when inquiry.These details are very important for Quotation.Pls note it!