Threaded Collar 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).
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 threaded connection JMC Professional Auger components.
Lighter weight and more compact case for auger kits containing 34 inch extensions. Will not fit 45 inch extensions. Includes two 12 inch crescent wrenches.