You can now match your trailer hook wire to your fly.
Doubled over tests out at over 50 lbs. breaking strength and is stiff enough to hold the hook in position without fowling.
The standard size is for made for the average steelhead/salmon hook, and the thin wire is made for smaller trout spey intruders or any pattern requiring a smaller hook.
Sz Regular for sz 6 hooks and up
Sz Small for sz 6 hooks and under