This DrySpec Tool Tube Kit attaches directly to any flat surface and can be used to carry a tool roll, a 30-ounce fuel bottle, or any other gear that can fit inside of it. The DrySpec Tool Tube measures 14 inches long overall with a measurement of 12 inches from mounting foot tip to mounting foot tip. The tube body measures 12 inches from the base of the tube body to the cap with the foot at the opposite end of the cap extending 2 inches beyond the tube. The tube is 5 inches wide at its widest point with a main body diameter of 4.25 inches. The foot at the cap end is 3 inches wide with three round 8 mm mounting holes while the opposite foot is 2 inches wide and has one elongated 8 mm mounting hole. The feet provide 3/4 of an inch clearance for the main tube and 1/2 inch at the tube's widest point. Mounting Kit Notes: Tool Tube. Drill bit. Mounting hardware with sealing washers.