• 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. 
• NEEDS TOOL-"TIGHTENERTOOL" (not included.)                                                       SEE LINK HERE