Hayes Style Wire Tightener - Durable Aluminum Cog for Bike Brakes & Cables | Perfect for Mountain Bikes, Road Bikes & DIY Repairs

Galvanized frame and aluminum cog. A spring wire keeps the strap down and cog from accidentally unspooling. To unload for fence repairs, use tightener handle to take pressure off strap,  flip the strap the opposite way and ease out the reserve wire. It is always a good idea when building your fences to keep a little extra wire on your strainer for future repairs. This can save you time!  

Use tightener tool ()