To make your own (much cheaper) shanks see "The Frugal fly rodder"; Malin steel leader material in 0.023 size is 42 feet long and costs $2.50; about 100 or more shanks out of 42 feet. All you need is a side cutter, round needle nose jaws, and a second pair of needle nose with serrated jaws that grab the wire. Make shanks very short or 2 inches or longer.