Strong quality and safety guarantee: All accessories are 304 stainless steel, with high hardness, corrosion resistance and weather resistance that does not cause stretching or obvious aging from the surface. The hammock suspension kit with a flat top and a lock nut can maximize resistance. It is suitable for all kinds of swings, hammocks and boxing bags with a workload not exceeding 350 kg. Special Design: Integrated design of the screw and seal, the wear-resistant seals on both sides are protected to reduce direct friction, provide high wear resistance and remain silent. The support with counter-nut can be rotated at 180 ° vertically to better support the weight. The suspension hook holder can pivot freely 360 ° and has a spring loop to help you lock the hook firmly without falling through itself. Easy to install: Two 0.39 inch holes are pre-drilled on the hammock support for bolting with concrete or wooden beams. Including 2 expansion bolts for concrete construction and 2 hex screws