SUREswivel was designed for those times when tethering your pet is the safest or the only option. It is a revolutionary 360-degree swiveling tie-out/anchor base for tethering your pets that is truly tangle free. When you use the SUREswivel your tether will not wrap up on the base or twist up and break. It has been tested in stable ground to securely hold 1000 lbs. of pull force when installed with the six included X3 Spiraled Anchor Stakes. X3 Anchor Stakes have a patented spiraled shaft design that provide three times the holding strength of a standard stake and firmly hold the base in place when used in stable soil.