In spite of its name, the Clay Auger will sample the widest variety of soils. Good for most soils between dry sand and wet mud. Fits all JMC Quick Connect Professional Auger components.
Aluminum Washer fits manual sliding hammer for the JMC Environmentalist's Sub-Soil Probe PLUS(1.2 inch diameter sampler). Fits between the Threaded Collar(PN163) and the Aluminum Cylinder(PN453). This is the part that rests on the top of the sampling tube.