it is NOT your typical braid...it was designed with spinning reels in mind....and no need for a leader at all..
this is from TW
The longest-casting and easiest handling superline TUF-Line has ever developed, TUF-Line SuperCast will change the way you think about braided line. Utilizing a revolutionary post-process coating that adds lubricity, this new coating allows SuperCast to have superior castability and distance compared to monofilament, fluorocarbon, or standard braided lines. The added lubricity also allows knots to cinch down tighter for higher strength and security.
Manufactured with a unique bi-component process, TUF-Line SuperCast incorporates an exclusive inside-out coating process that ensures a perfectly round, smooth, and highly abrasion-resistant superline that does not break down or lose its rigidity with prolonged use. The coating process of SuperCast also ensures permanent coloration of the line so the color won’t fade, flake, or bleed.
SuperCast with its smooth outer coating, quietly glides through the rod guides without the tell-tale braided line screech, allowing for longer casting distance and a stealthier approach when flipping or punching. SuperCast also eliminates common issues associated with spinning reels when using braided lines, like poor bail performance, tip wraps, and wind knots. So if you have been hesitant to try braided lines on your spinning reels, SuperCast is the perfect choice. For casting reel applications the ultra-round construction of SuperCast virtually eliminates the line's ability to dig into itself and will give you trouble-free handling all day long. So whether you are using a casting or spinning reel you will find SuperCast to be the quietest and easiest to manage superline ever designed. TUF-Line SuperCast delivers a significant advancement in superlines by producing a line that has the smoothness and handling of monofilament and the toughness of braid.