Rio's T-series sinking lines are 30' in length and come in five sink rates, all labeled with a different loop color for easy accessibility.
-T-8 240 grains (6-7 in/sec, white)
-T-11 330 grains (7-8 in/sec, green)
-T-14 420 grains (8-9 in/sec, blue)
-T17 510 grains (9-10 in/sec, black)
-T20 600 grains (10 + in/sec, none)
You can fish them as shooting heads off of a running line or cut them down to build your own sink tips to match a specific situation. Great for use with Skagit style shooting heads. Whether you are on a big river, lake, or small stream with deep pools, these lines can be made to do what you need.