Compact Non-Con Probe
The non-conductive probe provides more digging ability than a standard round probe, and can be safer to use than a steel knife under some circumstances. Also available on GSA Advantage here: DK-4
These are a consumable item, depending on the soil type and use the tip will wear down over time, so there is no lifetime warranty on the non-conductive probes.
5″ Blade, 8-7/8″ overall, 1/4″ thick, weighs 1.5oz