Review on TESLANG Antigravity Yoga Swing Set With Aerial Silks, Hammock, 2 Extension Straps, And O-Ring For Flying And Aerial Yoga, 5M X 2.8M by Ben Walls

Summary: I have been using carabiners, pulleys and swivels in tree felling applications for a few years now. Have not used them in climbing applications.Observations: These are marked CE and EN, but I was not able to verify the authenticity of the markings.Recommendations: What is your life and property worth? Only you can answer that question for yourself. There are lots of name brand climbing equipment, with legitimate certifications.Pros: Decent fit & finish; smooth operation under no load.Cons: Unverified CE/EN markings. One of the markings (EN354) is related to lanyards, which does not appear to be applicable to this swivel.Conclusion: At $26, rating this 3-stars, and only recommending for non-critical applications. For critical applications, I have used DMM, Petzl, and Metolius climbing equipment. Absent being able to verify the safety markings, the next best thing would be to find a product which has a significant amount of ratings/reviews. The GM CLIMBING below has 136 ratings, 4.7 stars.