Maratac Titanium Tube-A-Ton 6.25in Overall TI TUBE-A-TON. 25in overall. External diameter: 0.797in (20mm). Internal opening: 0.582in (14.8mm). Internal depth: 5.6in (143mm). Lid is secured via flange to cap seal with internal O-ring. Can hold two AA batteries (not included). Comes in plastic tube. Titanium construction. Specifications for Maratac Titanium Tube-A-Ton: Manufacturer: Maratac Additional Features: 0.582in 14.8mm 5.6in 143Mm Weight: 0.22 lb Diameter: 0.582 in 20 mm Overall Length: 6.25 in Length: 6.25 in Package Contents: Maratac Titanium Tube-A-Ton Maratac TI TUBE-A-TON: Titanium Tube-A-Ton 6.25in Overall