The Tecnoseal X8 Shaft Anode is designed specifically for marine applications, providing essential protection for your boat's shaft. With a diameter of 1-3/4 inches, this zinc anode effectively combats corrosion, ensuring the longevity of your vessel's components. Its durable construction allows for optimal performance in both freshwater and saltwater environments. Easy to install, the X8 is a reliable choice for boat owners looking to safeguard their investment. Keep your marine equipment in top shape with this high-quality anode, designed to withstand the rigors of the sea.