You get what you paid for.
The clamps work just fine if you used them with light weight, for example: snatches, cleans, deadlifts, etc from around 135 lbs and a little +. However, if you use more weight on these movements and you let the barbell fall, the clamps will come off and the discs won’t be secured. I guess for the price you get what you pay for, but would be smart to remember that safety is always first.
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