UV-curing resins with multiple functions, all while curing in secondsUV resins allow for infinite work time but cure within seconds when exposed to one of Loon's UV lights. The result: a perfect application with a durable, clean, and glossy finish. The three different viscosities were developed to perform in three different circumstances:UV Flow is the same viscosity as water and locks in threads as a head cement and provides a super-thin coating to heads, bodies or midges.UV Thin is viscous enough to build heads or wing cases, but thin enough to coat bodies on small, low-profile flies.UV Thick is perfect for building big heads, bodies, and wing cases. The fastest and easiest way to add color to a fly. UV Fly Finish is the colored UV resin companion to UV Clear Fly Finish and does exactly what you want it to do: instantly provide color and complexity to flies. The "Hot" colors are perfect for adding hot spots and trigger points, providing a subtle glow. Lighter colors offer a life-like translucence, presenting the opportunity to build flies with a depth that couldn’t be achieved otherwise.