Manual canister tool tube dual sport motorcycle storage container. for an extra fuel bottle, sandwich, water bottle, spare parts, etc.. The lid can be used as a large cup or bowl.   Inside dimensions are 3-1/8" X 12" X 1/2". The perfect size for a comprehensive tool kit, rain gear, water and a 30oz MSR fuel bottle. (not included) The mounting holes are 10.5" apart. Detailed measurements: Inner diameter 3.20" Inside length 12.25" Total length outside 14.4" Distance of mounting holes (center to center holes) 10.5" (268mm)