Fence Post Anchor Metal Ground Spike Heavy Duty Black Coated Powder Fence Stakes Post Support Base for 4"x4" Mailbox or Fence Post, 24"x4"x4" Outer Dia (3.5"x3.5" Inner Dia), Pack of 4

Good sturdy product. Works as expected to.

I used these to support a set of stairs up a slope in our back yard. I found two things that made installation easier. First I used a 7/8" x 18" spade bit to make a pilot hole. This eliminated some of the mis-alignment when driving the it into the ground. Second, as the picture shows I used the Bubble Level app on my phone to insure proper alignment. I would check it about every 4-6". These are the 6th and 7th of these I have used and have not experienced the failures others have mentioned. The others were used as bases for fence posts. IMPORTANT NOTE: the posts were secured to an existing chain link fence system. These WOULD NOT work with freestanding fence posts.

When Halloween pranksters took out about 16 mailboxes in the neighborhood, I was delighted to find these aches that I could use to replant the 4 x 4 mailbox post. I did not have to re-dig a hole, fill it with concrete and insert a new post. I was able to use the old post With one of these post holders and sink it easily with a sledgehammer. It is solid and straight. I gave one of the extras to a neighbor and I am saving the other two to install some 4 x 4 posts for a car shade. They did the job easily and as promised.

Worked good on my antenna post using 7' 4x4 (after cutting off a foot to use to pound it in. The pounding block was impossible to pull out so used sone bundled 2x2's . need to shave some of the 4x4 to make it work. that part was disappointing.

I really only needed one but for the great price I ordered 4 knowing I’d eventually use them all. These are really expensive in the big box stores so I was expecting them to be flimsy but they are not!! They drive into the ground exactly like the ones at HD for a fraction of the price!