1/4″ X 2-1/2 ” X 15 1/8″ ALUMINUM 6061 FLAT BAR T6511 8 3/16″ tapped holes 1/4″ X 2-1/2 ” X 15 1/8″ ALUMINUM 6061 FLAT BAR T6511 8 3/16″ tapped holes. Used but tapped holes are clean.