Shimano PowerPro Zero Impact
The knot in any braided line is the weakest point and therefore the point of failure. In regular situations the knot can be up to 50% weaker than the line itself.
Power Pro Zero-Impact provides a line with Terminal Zone Technology. The line strength in the terminal zone (black area in the image) is up to 50% stronger without compromising the total line capacity of the reel spool.
Shimano says: “Simply tie your knot in one of the clearly marked black termination zones to realise 100% knot strength and feel a level of confidence that is unmatched by any other superline on the market!”