The Scientific Anglers UST SD Shooting Head is specially designed for versatile fly fishers targeting salmon, sea trout, predators and other whitewater species. Thanks to its double density (S1/S2), it slows down fly drift in fast currents while maintaining a constant depth. Its taper-free rear profile facilitates rod loading and repositioning during Spey or classic casts, generating high line speed and tight, efficient loops. Its elongated front profile guarantees smooth flipping and delicate presentations, ideal for wary fish. Compatible with poly leaders and classic leaders, this casting head offers unrivalled performance in a variety of environments and weather conditions.