1M Fence Wire Strainer. Wire Strainer Clamps are used for adding tension to your Stock Wire Fencing to prevent it from sagging which adds much needed strength and support. A fence that isn’t sufficiently tensioned is prone to damage caused by your animals as well as the weather and other causes like vandalism. Our Fencing Strainer Clamps are incredibly easy to use and feature large eyes on each end. They are suitable for most Wire Net Design fences commonly used as boundary fencing. Simply put your fencing into the clamp before securing the plate using the included nuts, tension can then be added using a chain strainer before securing your wire fencing to your post. These Stock Fencing Strainers have been manufactured from high quality materials for strength and with a red powder coated finish that not only allows it to be easily seen but helps to protect it from the elements for long lasting use.