Pro Sportfisher's Pro Stonefly Backs revolutionize the mounting of plecopter imitations, often perceived as one of the most complex challenges in trout and grayling fishing. These pre-printed, pre-cut and domed nymph backs with UV-gloss finish offer unrivalled realism. When combined with the brand's Two-Toned Nymph Ribs, you'll achieve spectacular mounts in just a few minutes, where once it took an hour of painstaking work. Each pack contains three numbered pieces (1, 2 and 3) to respect the exact proportions of the insect: piece No.1 reaches the eye of the hook, No.3 attaches to the back and folds away, and No.2 fits between the two. All that's left to do is add legs or other details according to your preferences to create a realistic, high-performance peccopter in record time.