This tubing is the perfect material for tying flexo crab patterns. The tubing, when flared, gives you the perfect crab shape. The beauty of the flexo crab is that the weight is encased inside the netting material and the water is allowed to flow through the porous body – which makes the crab sink more quickly than one with a solid body. It is also very light so you can cast a crab pattern all day without your arm getting fatigued. The tubing is available in 1/8″ and 1/4″ and is 36″ long. Each package will tie dozens of flies.