Snap-Loc Zinc Plated Self-Drilling Screw Set fastens E-Track to structural metal framing with easy one step self-drilling installation! The Snap-Loc E-Track System is the easiest, fastest and safest way to tie-down cargo items on pickups, trucks, trailers, racks, walls, floors, ceilings and more! THE PROBLEM: Cheap hook straps come loose, break often causing valuable items to dangerously fall, tangle into a frustrating ball of spaghetti and waste your time and money. THE SOLUTION: The Snap-Loc E-Track Single System securely anchors all sized cargo items where you need it, uses long lasting 2 inch wide professional movers straps and stows away neatly in small spaces. You're going to love it! Our E-Track System also coordinates with the Snap-Loc Dolly System to easily move more in less time with high capacity smooth rolling casters, E-Track Strap attachment and Push Cart Panel Cart conversion.