Overland Lockable Extension
Overland Lockable Extension (Patent Pending) solved the problem of locking stacked Cans. Normally using the normal extension of Overland Fuel you cannot lock stacked cans together even if you use the lockable mounts. You can still rotate the top can, which will in turn rotate the extension thread, opening the entire stack of cans.
With the Lockable Extension, you can lock it by pushing the integrated metal rod down into the lower stacked can mount area. This metal rod will stop the rotation of the extension, preventing it from being opened by rotating the top can. Opening the lock is as easy as pushing a button – literally. Press the button on the extension, and the rod will disengage, allowing the extension to open.