SECURE IT TO A FIXED OBJECT to prevent theft with included 35†steel cable, or mount it permanently with 2 through holes in the bottom of the case. CONVENIENT EXTERNAL SIZE at 9.5†x 6.5†x 2.25†AND INTERNAL SIZE 9" x 6" and using durable, 20ga. powder coated steel; you can place it in a drawer or under a car seat. LINED with a combination of convoluted and flat foam to surround and protect your valuables. The ONLY LOCKABLE CASE IN THE MARKET WITH AN INTERNAL HINGE to prevent someone from knocking out the hinge pin and opening the case up even when locked. CAN BE USED TO LOCK UP OTHER ITEMS like cash, jewelry, passports, credit cards, watches, checkbooks. etc. WARNING: This Metal Lockable Case can be used for many storage applications. When used for securing firearms or valuables, a locked case may be defeated by a determined individual with time and appropriate tools. This case is NOT A SUBSTITUTE FOR A SAFE. The Metal Case can be locked and placed in checked baggage per TSA requirements. Check with the airline you are flying and the TSA's website before transporting the firearm and case to the airport.