Description: The Dwawoo electric fence strainer, increases the tension on the fence wire to about 250 lbs. Strainers should be installed every 1,500' - 2,500' feet. They should be located in the middle of a fence span (for example, halfway between two corner posts.) Specification: Material: Aluminum alloy Quantity: 24pcs Color: Silver Size: Shown as picture Weight: Approx. 182g/6.4oz Package list: 24 * Fence Wire Strainer Note: Please allow slight error due to manual measurement. Thanks for your understanding.