2.25 in. Hollow Stem Augers

One of the major advantages of using a hollow stem auger is well installation directly through the hollow stem auger into non-cohesive material. The inside diameter of the hollow stem auger generally is used to specify size, not the diameter of the hole drilled. Appropriate clearance should be available to provide effective space for materials placement. If space is insufficient, bridging of the materials may bind the casing and hollow stem auger together, resulting in the extraction of the well as the hollow stem auger is removed.