A Kit Sheet that includes Stonefly Nymph Shells with Legs(all with UC-gloss doming) PLUS the Two-Tone Nymph Ribbing required. To this kit, you just need to add a hook (TMC 200R or similar), weight, materials for the tail and some dubbing, and you can create super realistic looking stoneflies. Sizes: Small (for hook sizes: 10-12), Medium (sizes: 8-10), Large (sizes: 6-8). 18-sets