This is an 18 inch safety cover lawn spike anchor.
The lawn stakes can be used for garden and landscape areas. The aluminum pins are 1/2 inch round, 18 inches long, with a head at the top to hold a spring. Lawn stakes do not provide the same degree of safety as a standard or pipe-anchor assembly and should not be used for more than 20% of the anchoring points around a pool. Lawn stakes should also never be placed at opposite ends of the same strap.