Also referred to as wire strainers, this ratchet style tightener is used in tensioning wire (to be used as wire is installed not after wire is already up).
These tighteners come with a stainless steel strap with spring strap (if you prefer them without the aid of the spring strap, the spring can be pulled back and not used).
Hot dipped galvanized for long life and has a spring to hold the flipper tight against the cog.