These soil probes are tough, easy to use and keep clean. Take 10", up to 14 ¼”, core sample, 1" in diameter with soil samples at or near the ground surface. Get a quick soil profile or description, to determine soil moisture content. We offer Soil Probes made of stainless steel and steel tubing, electroplated with copper, and then chromed. All out soil probes wipe clean, ready for another sample.