Rope Tightener / Tensioning Tool Fits rope sizes: 3/8" (9mm) - 1/8" (3mm) High rope tension is easy to achieve and maintain. It is also easy to control the release of high tension without sudden and dangerous unloading. The Figure 9 eliminates the hassle and frustration of tying, adjusting and untying knots Made of high quality aluminum and available in two sizes to fit almost any rope (1/16to 3/8easy to follow instructions are laser engraved on the surface. Excellent alternative to expensive and complicated cam tensioning devices and stretch cords Two different attachment methods for a variety of uses: Loop System and Fixed End System