ESP Leadcore 7m, This Leadcore is supplied on a handy spool designed to fit neatly in the majority of tackle boxes. Leadcore is immensely strong with a breaking strain of around 45lbs and with its high abrasion resistance, it is ideal for coping with heavy weed and snags, while the special two-tone weave provides excellent camouflage. Having an extra high lead content ESP Leadcore ensures that the line lies unobtrusively along the bottom in the critical area closest to the bait.