Simpson Strong-Tie CB66 column bases are used to provide a connection of a 6 x 6 (5-1/2" x 5-1/2") post to concrete. The CB66 base is installed during the pouring of the concrete.Strap Material: 7 Ga. x 3" Wide Galvanized Steel Base Material: 7 Ga Galvanized (5-1/2" x 5-1/2") Fasteners: (2) 5/8" Machine BoltsCB66 Information and Installation InstructionsStandard G90 Zinc Galvanized Coating Information Standard G90 Zinc Galvanized Coating contains 0.90 oz. of zinc per square foot of surface area (total both sides). This coating provides a low level of corrosion resistance and should be used in dry environments.Level of Corrosion Resistance: Low Additional Simpson Strong-Tie Information If there are any items on the Simpson Strong-Tie Website that you do not see on the DHC Supplies website we will gladly special order them. Most special order Simpson items ship the same or next business day. Call us at 800-323-2999 for pricing and availability. Important: Selecting USPS as a shipping method for any Simpson Strong-Tie product may delay shipping 1-2 days. Additionally, international shipments may also be delayed 1-2 days.Possible Free Shipping! Orders (Continental USA Only) of Simpson Strong-Tie items only that total $1850.00 or more may ship free depending on location, type of business and the type of Simpson products required. Additional products will be charged standard shipping if applicable. Please call 800-323-2999 to see if your order qualifies.