Its what it says it is. Imagine using 10 lb mainline and casting 5oz method ball 70 yards. For any long range casting you should consider using a shock leader of 30lb plus, I use fox tapered leader so its about 50lb down to about 20 lb and about 20 feet long. I once cast a 3.5 ounce lead with no leader and gave it some real stick, it broke off and this missile must have travelled 150 yards straight over the lake!! Hope this helps