The Halcyon Vector Pro Fin Heavy Weight is a stainless steel ballast insert designed to fit securely in the Vector Pro fin pocket, giving you more control over your buoyancy and trim, especially in cold water or when using thicker exposure protection. Crafted from a solid stainless steel bullet and weighing 0.6 lb (272 g), this single weight sits evenly in the pocket without the need for a cap and installs easily using the same screw system as the other fin components. Whether you're fine-tuning your configuration for a specific dive environment or simply seeking the perfect balance, this accessory is a smart and simple way to further customize your fins.