This is a softer version of original IQ fluorocarbon hook link material and is great all-round rig material. It still has enough stiffness to be used as a boom material, but is supple enough that it allows movement so that rigs such as the IQ D-rig can work effectively. As long as it is tied correctly it retains good knot strength (we recommend a Grinner or Palomar knot) and is virtually invisible in water as a result of its refractive index. It comes on a 20m spool