Aluminum Clothesline Tightener

This can help tighten a sagging clothesline and fight the inevitable effects of gravity on your lines by fixing this tightener to them. It draws the line in and tightens without forcing you to restring. It can be used with fixed line or pulley systems and you'll never have to mess with burdensome knots again. Thread your line through the spring-loaded center and pull the clothesline to tighten. The 3 ball bearings grip your like to keep it taut and the spring action center prevents it from slipping.