Cable Protector Plate, 2-1/2 Inches Tall x 1-1/2 Inch Wide, Galvanized Steel, Steel Clip and No Nails Required, Protects Non-Metallic Sheathed Cables Or Raceway Type Wires Running Through Wood Studs, Joists, Rafters, Or Similar Structural Wood Members From Accidental Nail, Screw Or Drill Penetration. No Nails Required. Contractor package.