This is the FireSteel.com FireSteel tube without the FireSteel.
The cap of this FireSteel Tube is designed to hold a 1/4-inch diameter FireSteel is that is 3-inches long or less. This is equivalent to the "Ranger" FireSteel.com FireSteel.
The tube itself is approximately 3-7/8 inches long by 5/8 inch in diameter. Cap screws back into tube to make "one heck of a handle".
To attach your FireSteel to the cap, simply use a strong glue (Gorilla Glue works well).
FireSteel and Scraper sold separately.