Fly Tying Hook Conversion Chart

Daiichi Hooks Conversion Chart

http://hooklineandsinker.ca/fly-tyers-hook-guide-hook-conversion-comparison-charts/

https://secureservercdn.net/184.168.47.225/6a7.ea3.myftpupload.com/wp-content/uploads/2016/03/2009MustadFlyHookConvChart_PR013009-Sheet1.pdf