The ultra innovative Threader Fly Box from CF Design is a must! With an array of 10 ultra-handy detachable wire threaders included inside, these unique fly cases allow you to preload your favorite fly patterns onto individual threaders, then quickly and efficiently pull gossamer tippets through tiny hook eyes streamside with remarkable ease! Simply lift threader holder to place tippet through threader and remove the fly, and presto... it's literally that easy! With plenty of room to add more spare threaders (sold separately) to increase your capacity of flies carried, the CF-3610THR+ Large Threader Fly Case measures 197mm × 42mm × 114mm, and comes with the following 10 threaders included: