Drill Rod, 4′ AWJ, 1-3/4″ Outside Diameter, Tapered Thread, Hollow ShaftSKU: A54S
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D.C.D.M.A. standard one piece drill rod, 1-3/4″ outside diameter with hollow shaft and 5 threads per inch, tapered thread. These drill rods are male by female with the male end welded in place. Drilling fluid is pumped down the center of the rods to cool the bit and flush the cuttings out of the borehole.