Tightly braided, high tenacity Nylon multifilament yarn encapsulates a 99.9% pure lead core. This “pure” lead construction offers smaller-diameter-than-standard lead core lines. Color metering every 10 YARDS with a high visibility dye enables the angler to instantly determine depth. A must for every angler who needs extra weight for deep water trolling. (1/4 lb spool, measuring 100 yards)