The Simpson Strong-Tie CPS is a composite-plastic standoff designed for increased concrete surface area. The molded composite plastic will never rust and has been designed for maximum durability.Installation: Post: Drill a 3/4" diameter hole, 10" into the center of the post. Clean out dust. Fill hole halfway with Simpson Strong-Tie® SET® epoxy anchoring adhesive. Insert all-thread rod and allow epoxy to set and cure. Secure standoff to post using four 10d nails except PBV which uses four Simpson Strong-Tie Strong-Drive® SDS Heavy-Duty Connector screws. Concrete: Drill a 3/4" diameter hole per anchor design. Clean out dust. Fill hole halfway with Simpson Strong-Tie SET epoxy anchoring adhesive. Insert post subassembly into hole and allow epoxy to set and cure. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non top-supported installations (such as fences or unbraced carports). NOTE: The correct fasteners installed in the correct position must be used to achieve published load valuesCalifornia Residents: WARNING