I could not imagine my life without this flashlight -lrb- and a Leatherman -rrb- . when I work as a occasional camera assistant on commercial and film , the maglite be the perfect size for check the gate , cleaning equipment , or even walk around in dark forest look for the lead actress . I will take some paper tape and wrap it around the tail end of the barrel provide a soft grip that my tooth can sink into . all too often I 'll be in a awkward position , reach back with my right hand to the holster , whip out the torch , twist it on , and stick it into my mouth in one smooth motion . each torch come with its own replacement bulb , conveniently `` hide '' in the tail spring . it be so well insulate that drop the maglite onto hard rock while run will not break the spare -lrb- though the current bulb may not fare quite so well -rrb- . there be also professional -lrb- and online do-it-yourself -rrb- conversion to replace the bulb with a gallium-based led bulb , the kind that never burn out , be thrice as bright , and use half the battery power . you can use the standard white color , or red or dark green led for `` night-vision . '' I have not do this yet myself , although there be no fear of make a mistake . I own a silver , blue , red , forest green , and dark blue aa lite , a mini-mag aaa for the house\/car key , and a d-cell large maglite for check around the house , or keep in the car on long trip . you can twist off the head , expose the bulb entirely while it be `` burning . '' this be call candle-mode . by hang the light from the tail loopholder , you can have a omni-directional light that be bright enough to put away equipment under . several of these string about brighten the room even more so . if you be into focus pull , I use this for critical focus , should the need arise . have someone hold the torch in candle-mode by the subject , and you can focus on the filament for a precise setting . these thing be heavy duty and be not make of joke material like plastic and rubber . the mag be the way to go .