Vortex Folding Ring Spiral Ground Anchor (10") w/ Walmart Pickup Discount – $3.70
https://www.walmart.com/ip/Libert…e/19861458
Amazon has them as well but it’s an add on item
https://www.amazon.com/Liberty-Ou…B005FOHXGU
Go for about $10 at Home Depot
For reference: http://www.homedepot.c