For use in panels thicker than .125" (3,2 mm). Close unneeded panel holes and electrical knock-outs. Locking fingers snap into holes with fingertip pressure for quick and easy installation. Convex, matte finish head tapers to a thin edge. Locking fingers in fractional increments up to the maximum panel thickness. Withstand a push back force of 35 pounds. Available in multiple sizes for use in .375" (9,5 mm) to 2.000" (50,8 mm) diameter holes for panel thickness up to .250" (6,4 mm). Approximate Head Thickness: .062" (1,6 mm). Thickness may vary.