Billfisher Double Sleeves offer superior protection for your fishing line, crafted from high-quality copper with a durable black nickel finish. Available in packs of 25 or 50, these sleeves accommodate a range of mono line strengths—from 60/80Lb up to 400Lb—ensuring a secure, reliable connection for various fishing applications. Designed for expert anglers, they provide exceptional durability and corrosion resistance, enhancing the longevity and performance of your tackle.