New Mexico Flag Corrugated Effect Wholesale Novelty Square Sign SQ-455. Wholesale 12" x 12" High gloss metal Square Sign. Made of the highest quality aluminum for a weather resistant finish. It is lightweight and durable. Pre-drilled holes for quick and easy mounting. Add a ribbon, wire or string to instantly personalize your sign. Individually shrink-wrapped and proudly made in the USA. Most orders ship within 24-48 hours.