OAKFIELD Model B soil samplers are made of multi-plated steel to resist the abrasive action of the soil. They are built for hard use under all kinds of conditions and in all types of soil. Oakfield samplers have interchangeable parts for your convenience. Every part is carefully machined and constructed to be completely adaptable in any combination of units. Model B Soil Sampler This 36" (assembled length) tube kit contains one 12" handle, two 12" extension rods, one 12" tube with a No. S-2 tip for wet soil, and a 12" heavy fiberboard case.