H.D.GALV. GRAY IRON OPEN BASE CLEAT 92HX Material: Gray iron Size: 3.5", 4", 5", 6", 8", 8"(SLIM), 10", 12", 15", 18", 24" 1) H.D.GALV. GRAY IRON OPEN BASE CLEAT 92HX2) Material: Gray iron3) Size: 3.5", 4", 5", 6", 8", 8"(SLIM), 10", 12", 15", 18", 24"4) Malleable steel material cleat also available H.D.GALV. GRAY IRON OPEN BASE CLEAT 92HX