Battery Tubes / Extension Tubes

Shorter battery tubes allow you to reduce the overall length and weight of your flashlight by running a shorter battery.  The tradeoff is reduced runtime.  

Extension tubes allow you to extend your runtime by adding extra cell(s).  If your light has been modified, you will need to double check to make sure that the driver you are using can handle the extra voltage. 

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Convoy L6 2x18650 2x26650 Unibody Tube - Block-style Knurling
This replacement tube gives you full-time 2x26650 capability without an extension along with incredi..
$7.95
Emisar D4V2 18350 Battery Tube
This 18350 tube will allow you to shrink your Emisar D4V2 flashlight down to an even smaller si..
$5.00
Supfire M2-Z Extension Tube (For Modified Light)
This extension tube will allow you to run use additional 18650 batteries on your M2-Z.  This is..
$1.85
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