All about the cones...
This probe is awesome with the little black cones at the top of each segment makes this significantly faster to assemble than poles with out it. Look for those cones on any probe you buy. I also love the rough sandpaper grip so that your hand does not slip on the probe while it is in use. You can throw this out on the snow, grip and rip and in a few seconds your ready to start the rescue. For the price this probe is awesome, best out there.