A.I.T. France Smart waste cap Nalgene can neck B53 + 1 entrie (1/8'' or 1/16'')+ 3 leaks (6-9 mm), with 1 charcoal cartridge filter emplacement

AIT Smart Waste Caps for NALGENE’s® bottles with their Universal 2 in 1 capillary fitting (outer diameter 1/8” to 1/16”) and tube fitting 6 to 9 mm.