Varied Size Foil Liner for induction Bottle (PE) Sealer Machine Material: Aluminium and Paperbacking Work for PE Plastic Not Work for Glass and PET: PE is soft and squeeze bendable ; PET is Hard and not easy to squeeze size: 18mm, 20mm, 24mm, 26mm, 28mm, 30mm, 37mm, 38mm. 43mm and 55mm Thickness : foil : 0.1-0.15mm (5-6mil), Air and wateright hermetic seal prevents leakage Material: Aluminium and Paper backing size: 18mm, 20mm, 24mm, 26mm, 28mm, 30mm, 37mm, 38mm, 43mm and 55mm Thickness : foil : 0.1- 0.15mm (5-6mil) Air and water tight hermetic seal prevents leakage. Use with heat induction Bottle Sealer Machine Work for PE Plastic ONLY. NOT Work for Glass and PET container. PE is soft and squeezeable and bendable ; PET is Hard and not easy to squeeze. Foil Cap Liner only , Machine is NOT included.