This is probably old news, but I don't remember seeing it until recently.
https://www.genuineguidegear.com/lif...valanche-probe

Covers these models only:
#1631 G3 300 Carbon Speed Tech probe (red T-handle)
#1911 G3 240 Carbon Speed Tech SL probe (black T-handle)
#1635 G3 190 Carbon Speed Tech SL probe (black T-handle)