Thank you for your custom.Customer care is our top priority. Offer is subject to availability.We promise you won t regret buying it. Ideal for exterior or corrosive environments Less carbon steel less expansion Installs with an impact wrench or by hand tool Code listed in IAPMO UES ER-493 (concrete) and ICC-ES ESR-1056 (masonry) Tested per ACI355.2 and AC193