Once your search has deduced a probable burial site the next action is a hasty probe to find your partner - who’s counting on your fast response. Using a dedicated probe is more sensitive & effecient plus allows the use of your ski poles for stability and support while hiking avalanche debris and also the option of a fast escape from secondary slides. GUIDE PROBE has 8 sections, single centimeter markings and alternating pole section colors. TOUR PROBE is compact 7 section marked in 5 cm increments.