This-stronger-than-steel AMS collapsible soil sampler is made from aircraft-quality material and triple-plated with chrome to prevent rusting. The tip is heat treated and wear-resistant. Collapsible probe includes one 10"L comfort-grip cross handle, one 12"L extension, one 21"L sample tube. Can be used as a 21" or a 33" soil sampler. Core is 3/4"-dia. x 12"L.