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A Good Choice for Wire Antenna Support Lines
These blocks meet or exceed my expectations. They are small and light, and the pulleys turn smoothly under load. The blocks are a perfect fit for the 5 mm (3/16 inch) Dacron cord that I am using to suspend the ends of a 240-foot wire between two tall trees. The blocks have survived the considerable tension applied to them during the antenna-installation process. Although I cannot predict how durable they will be over a period of years, I am confident that they will not be the first component of the antenna system to fail.