High quality tempered carbon steel needle ground flat on both sides to give locking edges that will keep any Pro Sportfisher tube, or any other tube for that matter in a firm grip, and still be easy to remove when the fly is tied. The Pro Flexi needles fit all fly tying vices, and this combined with a very low weight is why the Pro Sportfisher tube needles are the reference tool for serious fly tyers across the globe and have been for the past decade.
