Fly Tying Materials - Synthetics for Fly Tying - Gel Core Fritz 15mm Gel Core Fritz is a revolutionary new fritz purpose designed for flytying - not some second rate material from the textile trade. With Gel Core fritz we addressed key problems with the vast majority of fritz - the core doesnt accept dye and the material falls apart when tying. this fritz features our new Gel Core, which has an impregnated get to strongly bind the fibres meaning as well as looking great on the fly, there is no fibre loss and it will never fall apart when tying!! The material is all professionally dyed using state of the art pressure dyeing machines which are computer controlled to ensure 100% colour consistency and intensity. 2m per pack.