Braided Leaders have a loop in each end of the braided section.  All one needs to do is loop the butt end to the fly line and loop the other end to the Tippet (which is not braided). The same braided section will roll over a size 2 streamer or a size 20 dry; just change the tippet to match the fly.

7 1/2'

 Short (3-1/2 ft.) braided tapered butt section for 7-ft. leaders. Short length turns over easily.  Fly stays close to line when using sinking lines. Accurate casting.

9'

 Medium  (5-ft.) braided tapered butt section for 9-ft. leaders.  Good general length.  Allows sinking flies to sink deeper, quicker.

12

 Long (8-ft.) braided tapered butt section for 12-ft. leaders. Good for longer dead drifts.  Allows sinking flies to sink deeper, quicker.

Pro

 Easy to use.  They do it all—long casts, short casts; dry flies and emergers at the surface; nymphs, wets, and streamers scratching the bottom. Change from short to long leaders, sinking to fast sinking to floating leaders without tying anything harder than a loop. Available in a kit which contains spare loops for your line, mini-lead-heads, tippets and a wallet. Long life

Con

 Tend to spray water unless you buy the "filled" braid or unless you fill the braid with fly floatant.