Ground Markers Orange 6 Inch Whiskers with Lightweight Non-Rust Aluminum Stakes (Pack of 25) Survey Stakes, Construction Markers, Property Line Markers, Trail Markers

Used them to mark for house foundation. Suggestion by seller to predrill with 1/4" concrete drill bit, made the installation very easy. Picked up a long bit for my cordless drill at home depot for $12.

These have all kinds of great uses! I work on a video production crew and we use them for marking the ground so that our actors know where their marks are to stop during a scene and they can easily be color shifted out of the final shot... I also use them in my gravel driveway as a guide for backing my boat into the garage. I only have a few inches of clearance on each side so these give me a runway to follow and know that I'm not going to hit anything. As long as you keep the nail pounded in, they are mower friendly as well.

Easy to drive in with a claw hammer and pull out with the claw.

This will work for me. Really sturdy

Function as expected

Worked out just fine. One thing though is I was putting into hard pan dirt area and the nails weren’t very heavy duty and were starting to bend a couple of them.

Purchased Stake Chasers to use at our farm property for ground markers. Placed a stake chaser at each location survey location so the physical stakes can be removed while maintaining a visual reference for each surveyed location.Highly recommend these if you're interested.

Beware of hard ground, the aluminum spikes will bend if you’re not careful.