Assembly fits manual sliding hammer for the JMC Environmentalist's Sub-Soil Probe (0.8 inch diameter sampler). This is the part that rests on the top of the sampling tube that fits up inside the heavy sleeve of the hammer.
Assembly fits manual sliding hammer for the JMC Environmentalist's Sub-Soil Probe PLUS (1.2 inch diameter sampler). This is the part that rests on the top of the sampling tube that fits up inside the heavy sleeve of the hammer.