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This product has longer threads and is easier to install, usually used in heavy-duty facilities. To obtain reliable and powerful fastening force, it is necessary to ensure that the clamp ring fixed on the gecko is fully expanded. And the expansion clamp ring cannot detach from the rod or twist or deform in the hole. The calibrated tensile values are obtained under the condition of cement strength of 260-300kgs/cm2, and the maximum safe load shall not exceed 25% of the calibrated value. Suitable for concrete and dense natural stone, metal structures, metal profiles, base plates, support plates, brackets, railings, windows, curtain walls, machines, beams, beams, brackets, and more.