Riverruns a set of UV glues of both thick, thin and flew glue formula with a 12 LED head UV light battery, needle and fly NOT included. High tech introduced from Dental word. No any harm effect. Environmental friendly. They cure in seconds under UV light, become crystal clear and glass smooth. Customer can use the dubbing needle open the bottleneck. No heat needed. Simple, ready to use, no need any preparation. Stay clear and never turns yellow and also super durable comparing to traditional epoxy, 100% Tack-free. Thick UV glue (standard uv glue) is great for making surf candies, epoxy shrimp, and bait fish heads or any flies heads, also good in bodies or wing cases, or to coat a small thread head. Thin UV glue flows easily with excellent penetration, applying on flies bodies, wings, or as coasting for decal eyes and heads. They are great in making nymphs, scud backs, chironomids, and more you can name. Flew uv glue ready to use, no need any preparation.This super power flex UV glue will make vivid flies moving super realistic. They are also the best protection for all type knots. Customer can use the dubbing needle open the bottleneck.Cure in seconds under UV light, crystal clear and glass smooth. Stay clear and never turns yellow and also super durable comparing traditional epoxy. 100% Tack-free. Both of them are multi-purpose, instantly cure with UV light or sunlight. Store away from direct light best use 24 months after the opening Package: 20 ml (2/3OZ) each formula UV light: Surface process: common oxidation Size : 3.86*1.22*1.14 inch (9.8*3.1*2.9 cm) LED: 12 UV 395-400NM Power: 3AAA battery as drive power Switch: tail switch Product weight:73g Brightness: 11000MCD Last time: 6-8 hours Package: white box