Happin® Ultra Strong Trampoline Stakes Anchors High Wind, Ground Anchors Heavy Duty, Trampoline Tie Down Anchor Kit, Ground Stakes Galvanized Steel, Trampoline Accessories, U Shaped (8 Pack, Black)

They definitely work. We have had week long sustained 30 mph ground speed winds and these anchors held a 12 ft trampoline in place. Wouldn't have known the wind was so strong if not for a trampoline net. I mean it, these things gripped the ground and held on like it was it's job (it is it's job). Great value for what I paid, I was able to put 2 anchors at each leg of our trampoline (4 legs). They are so easy to install, push into ground and thenI would buy again except these hold so well that I won't have to buy new ones unless these corrode and break. If that happens ANYTIME soon, then the review would be updated.

I bought a pergola for the lawn. Wind gets under the cover and heavy wind actually moved it.Bolted in one side thats over masonry work... but wanted to secure the other side that sits in grass.These worked perfectly.

These do everything you could want. My trampoline has stayed put through high winds and storms, it's great. They are easy to remove and put back after mowing. I've definitely gotten my money's worth with this purchase

The item was just as destribed and has securely been holding our small windmill in place with the high winds in our area.

I wish I bought it sooner. I was on the fence because I wasn’t sure if it would fit the holes on the swing set poles but they do!! So far after 3 of my kids swinging on it for a while it’s still holding in place.

Product came very quickly and accurately.

60 mph winds over 30 hours. The trampoline didn’t move an inch.

Good anchors for a trampoline. Seem to be good quality and should keep the trampoline on the ground.