Just slip your leader through the slot, slide the tool down to the bend in the hook, push back and the hook slips harmlessly out. Sizes: Midge - for #18 hooks and smaller Original - for hooks as small as #18 and flies as large as medium-bodied streamersBig Bug - for streamers, hoppers and other large flies Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Hook Removers.