Bullet_point: ['Boss fits only Nalgene tanks; meets USP Class VI requirements and complies with 21CFR177.1520', 'Capacity: 28L (7.5 gallons)', 'Dimensions (outer diameter x depth): 30 x 46mm (12 x 18 inch); wall thickness: 2.4mm (3/32 inch); graduations: 0.5 gallons', 'Material: HDPE cover and tank with PP spigot', 'Spigot has 1-1/8 - 12 straight female threads, 3/8-in. opening; accepts 5/8-in. inner diameter tubing'] (Page 1)