M-d carpet trip, extra wide, fluted, 78220, 72″l, silver, screw nails the 2-inch x 72-inch fluted silver carpet trim easily covers a seam or gap between two flooring surfaces of unequal height. Carpet trim prevents carpet edges from fraying, vinyl floor seams from curling and creates a smooth transition between different flooring surfaces. Aluminum trim is easily secured to wood and concrete floors with provided screw nails. For installation on concrete floors use wooden pegs (sold separately).