Berkley ProSpec Professional Grade, 40lb | 18.1kg, 7550yd | 6903m Monofilament - 40lb | 18.1kg - 7550yd | 6903m Professional grade, premium saltwater monofilament Developed and testedwith professional tournament captains Thin diameter - greater reelcapacity Supple - lays great on spool, excellent casting, baits swimnaturally Excellent knot and impact strength - high strength-per-diameter for confidence and Control