Maglite compatible 7.5" extension tube in C cell size. Increase usage and light longevity by adding 7.5" of extra batteries to your flashlight. Heavy Duty thick tube with center knurling and smooth end portions. Available with coupler. This is intended as an extension and is threaded on both ends. Hard coat anodized German Aircraft Quality aluminum. (Note: Blue flashlight in photo is not included and is for comparison purposes only)