The ITW Tapcon 24397 Flat Head Phillips Concrete Fastener - 1/4-inch x 4-inch - 25-Pack is the choice of professionals that desire quality, strength and ease of install and has become the industry standard by which all other concrete anchors are measured. The ITW Tapcon 24397 Tapcon fastener uses a Climaseal coating that adds extra corrosion resistance and is recommended for use in ACQ pressure-treated lumber. Great for plywood backer boards to masonry, conduit clips and junction boxes, the ITW Tapcon 24397 is the new must have fastener. Features: * Approved by the Florida Building Code as well as Miami-Dade County Building Code * Tapcon anchors are easier to install - drill a hole and drive an anchor * The anchors are reversible and removable * Use with Tapcon 11250 3/16-inch drill bit What"s In The Box: * ITW Tapcon 24397 Flat Head Phillips Concrete Fastener - 1/4-inch x 4-inch - 25-Pack