Threaded Guide Rod fits manual sliding hammer for both the JMC Environmentalist's Sub-Soil Probe (0.8 inch diameter sampler) and the JMC Environmentalist's Sub-Soil Probe Plus (1.2 inch diameter sampler).
1/2 diameter ground and polished stressproof steel
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.