Ultimate Arms Gear Gunsmith White LED Bore Barrel 5" Flexible Head Light Flashlight 1 Super Bright White LED Bulb. Metal body. Extended Length: 9-1/4. 5 Flexible Neck. Sturdy Pocket Clip. Long lasting Bright LED Bulb Last up to 50,000 Hours. Requires 1AAA Battery (Battery is Included). 1 Extra Free Battery is Included. Designed to Give the right amount of light to the bore gun barrel for optimal gunsmithing.