UV2 färgad kalvsvans kan används som vinge eller stjärt till torrflugor och streamers. Pröva även i små laxflugor.

Den kanske mest kända flugan med kalvhår är Royal Wulff. Det vore otänkbart att få till stånd samma utseende och funktionsduglighet utan äkta kalvhår.

Kalvsvans längd är ca. 25 cm, hårlängd ca. 2-5 cm.

Ultravision UV2 is a proprietary process of dying that enhances material, adds visibility and natural color spectrums. It doesn't automatically mean that the material will shine when pointed with UV light. Double dye process gives UV2 materials and flies the added UVF/UVR ultraviolet wave lengths. It works in the following two ways:

• UVF is the UV Fluorescence. It is common on everything from street signs to bass lures. Lighter colors have stronger UVF effect on human eyes. Darker colors do not have this effect.
• UVR is the UV Reflectance. It is a spectrum of wave lengths humans can not perceive yet is extremely common in the animal and insect world. UVR allows mayflies to find mates, and bees to find flowers. Many male birds and bugs have a strong natural UVR signature.