Leslie Owrote a review of Sea To Summit Ground Control Tent Pegs - 8-Pack on October 16, 2016
Familiarity: I've put it through the wringer
As the other reviewers have mentioned, the aluminum is too soft. I should have known better but there weren't any reviews when I purchased these and I do usually like Sea to Summit gear so I gave it a whirl.
I needed some good new y-stakes before heading to Banff for a backpacking trip. I ultimately chose these because the price was right for a set of 8 rather than 6, they're super lightweight, and take up minimal space. On first use, hit perfectly straight on, one stake bent badly and another started to bend. I figured I'd hit a rock but it's a y stake, it shouldn't be that easy to bend. Even worse, I was able to bend it back with my hand. I'm 5'6" and 125 lbs with bad hands, I don't bend things back ever. Also, the pull tabs obviously all split if not on the first pull, then on subsequent nights and each head splits and flattens when being driven into the ground with anything other than hand or foot (only doable in super soft ground which rarely happens most places I camp and backpack).
One good thing: using all 8 plus a couple other stakes in a 60-70 mph windstorm at the Idaho Mountain Festival this year, my tent fared the night far better than many others. I also like the different height options to attach guy-lines.
All in all, I'll probably have to purchase new stakes again after only a few months use but now I know for sure to go with a better quality aluminum.