BLUE COLOR: Standard Concrete Screw Color Identifies Base Material Application SUPERIOR CORROSION PROTECTION: 50 percent greater corrosion protection vs. competition HIGH STRENGTH: Manufactured from heat-treated carbon steel for strength and durability SUPERIOR STRENGTH DESIGN: Wide, serrated threads cut fast, easy, and clean into concrete THREADED TO TIP: Designed to quickly penetrate and sink into wood without a chisel point FLAT HEAD: Great for wood-to-concrete and countersunk hole applications UNDER HEAD MICRO-NIBS: Help flat-head screws cut a clean countersink in wood STAR DRIVE: Six contact points spread out torque for no-strip installs BUILDING CODE APPROVED: California Building Code Approved, Florida Building Code Approved, and Miami-Dade County Product Control in process SAFE FOR USE WITH TREATED LUMBER: Parts are AC257 Treated Lumber approved Features a T30 star drive size and requires a 3/16" x 3-1/2" drill bit for installation Ten (10) Fas-Paks per sellable unit 5 pieces per retail package