Original Hagner single sided pH board, the world's #1 stocksheet for more than 30 years. Contains no PVC, no acetate, no polystyrene, no plasticizers, detrimental additives, or sticky adhesives....

Original Hagner single sided pH board, the world's #1 stocksheet for more than 30 years. Contains no PVC, no acetate, no polystyrene, no plasticizers, detrimental additives, or sticky adhesives. Every stamp mounted on Hagner Stocksheets are firmly trapped between two inert substances. Highest quality pH neutralized paperboard and crystal clear pure polyester film have been so strongly joined together that more than 50 overlapping stamps will stay firmly in place under a single strip. Requires...