Hey guys, as you know we received the sleeves yesterday..Finally! 
The sleeve measures 78.95mm length 16.82 inside diameter. Thread pitch 7.14 mm. Making only battery room for 64.67 in length add on 2 o rings to fill the 1.5mm gap on each side will give another 3mm in total reverting it back to it's original length.
Using 2 protected cr123a, if we screw it on just right, that leaves 1.5mm on each side. This can be solved by using two o rings on each side of the
Extension tube. I'm going out for them today. For the 17670 side, we can either use the unprotected version or a Protected 14670 1800. I like the Aw14670 because AW is rated as the Best batteries all around.
Our TrustFire Protected 17670 3.7v 1800mah will Not fit the Sleeve. We are looking into ordering either unprotected 17670 or the AW 14670.
With 'O' rings on the unit 2 protected cr-123a/16340 3.0 volts or 3.7 can be used. However 3.7 is not recommended unless you have an atomizer that has sufficient resistance. We only supply 6 volt atomizers. Perhaps this gives us the reason to supply higher rated atomizers. We just like the 6 volt because they work on 3.7 beautifully.
The sleeves are now available along with Chameleons, as are the Ultrafire 3.7volt Cr-123a and Cr-123a 3.0Volts.
If there's any questions please don't hesitate to ask. I just want to keep all this info out in the open.

The sleeve measures 78.95mm length 16.82 inside diameter. Thread pitch 7.14 mm. Making only battery room for 64.67 in length add on 2 o rings to fill the 1.5mm gap on each side will give another 3mm in total reverting it back to it's original length.
Using 2 protected cr123a, if we screw it on just right, that leaves 1.5mm on each side. This can be solved by using two o rings on each side of the
Extension tube. I'm going out for them today. For the 17670 side, we can either use the unprotected version or a Protected 14670 1800. I like the Aw14670 because AW is rated as the Best batteries all around.
Our TrustFire Protected 17670 3.7v 1800mah will Not fit the Sleeve. We are looking into ordering either unprotected 17670 or the AW 14670.
With 'O' rings on the unit 2 protected cr-123a/16340 3.0 volts or 3.7 can be used. However 3.7 is not recommended unless you have an atomizer that has sufficient resistance. We only supply 6 volt atomizers. Perhaps this gives us the reason to supply higher rated atomizers. We just like the 6 volt because they work on 3.7 beautifully.
The sleeves are now available along with Chameleons, as are the Ultrafire 3.7volt Cr-123a and Cr-123a 3.0Volts.
If there's any questions please don't hesitate to ask. I just want to keep all this info out in the open.