What&';s the most difficult part about throwing streamers? Actually throwing streamers. Casting a sinking line with a weighted fly has never been a breeze, but our SONAR Sink 30 offers you one of the most castable sinking fly lines we&';ve ever created. Get down fast with the 30? sinking head without fearing for your life while casting. You can kiss your hardhat goodbye. 30&'; extra-fast sinking head with handling line for better casting and control Intermediate running line with ST+ slickness additive High durability and low tangling For temperate climates Super Fast Sink: 4.0 - 8.0 ips, sinks 4&'; - 15&'; Replaces Mastery Streamer Express Braided multifilament core SA ID - SA SONAR SINK 30 ### (### = grain weight)