Fly Box UV Crystal Hackle has been developed with an additional UV reflective str&. Cut to 10mm in length, UV Crystal hackle can be wound on to almost any fly but excels when being used as a replacement to a hackle. This UV Crystal Hackle is a favourite amongst competition anglers who use it as a replacement to a hackle on the likes of dabblers or as a body material on gold head lures. This material is professionally dyed using state of the art pressure dying machines, fully computer controlled to ensure 100% colour consistency & intensity through the full range of Fly Box Products! F-FB-CHUV-