Pro Sportfisher's Pro Nanotube is specially designed for fly tyers requiring a longer mounting surface for bulky patterns such as Intruders. With a mounting surface length of 2.2 mm, this tube is perfectly suited to the needs of the American market and integrates ideally with the cones, discs, weights and heads in the Pro Sportfisher range. Injection-molded for total compatibility and optimum ease of use.