These wire traces are assembled using Japanese seven-strand wire with matt black size eight swivels and black copper crimp sleeves. The crimps are then tensioned with a special machine utilising precise air pressure to ensure they are squeezed perfectly tight. The crimps are then sleeved with silicone for safety and rig presentation. They have a secure safety clip to attach lures quickly and easily. Always use a wire trace above your lure to ensure you lose fewer fish, pike will cut through mono in an instant. Kodex spinner traces are available in 20lb and 28lb breaking strains and you get two in each packet.