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4in (101.6mm) Shear Box has a round design and is used when testing soil specimens for direct and residual shear strength with Karol-Warner Dead-Weight Direct or Pneumatic Direct/Residual Shear Machines. The Shear Box is divided horizontally to allow opposing shear forces to be applied to the soil specimen. The Shear Box is made of anodized aluminum with a Teflon® finish that resists corrosion and comes with a top and bottom Porous Stone and Loading Ball.
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