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The usage of the rope tightener is to first insert a suitable thickness and length of iron wire into the round hole in the middle of the tiger head wire tensioner take-up wheel, wind the wire around the tiger head wire tensioner take-up wheel twice, and wrap the other wire One end is tied to the fixed point along the wire take-up direction, then the iron wire is straightened, and the clamping mouth of the tiger head wire tensioner is gold-fixed on the wire, and the wire can be tightened by moving the handle.