"Hildebrandt spinner blades have been ""Foolin' Fish Since 1899."" And no surprise, Hildebrandt Genuine Premium Blades are the most-used replacement blades on the market, long known as the best and brightest available. All are precision crafted of corrosion-resistant, heavy-gauge brass to exacting tolerances to ensure consistent performance with maximum vibration. Each blade is plated with your choice of Bright Nickel or 24K Gold, and highly polished to a mirror finish. Top anglers and custom lure builders know: using Hildebrandt Genuine Premium Colorado Blades on your spinnerbaits, inline spinners, and harness rigs maximizes lure flash and thump, leading to bigger catches. Most-used replacement blades on the market Long known as the best and brightest available Premium blades maximize lure flash and thump Precision crafted of heavy-gauge brass Corrosion-resistant base metal Bright Nickel or 24K Gold plated Highly polished to a brilliant mirror finish"