A.I.T. France Smart waste cap Nalgene can neck B83 + 1 leak (6-9mm), with 1 charcoal cartridge filter emplacement

Smart Waste Caps for space-saving cans S50 equipped with their Universal 2 in 1 capillary fitting (outer diameter 1/8” to 1/16”) and tube fitting 6 to 9 mm.