Wire equipped with M12x1.75 bowl. Used for cutting and cleaning grass. The line automatically adjusts after a light tap of the trimmer head on the ground. Line thickness: 2.4 mm, any shape. 12mm bowl, pitch 1.75, left thread. Diameter: 130 mm. Compatibility: HUSQVARNA 240R, ECHO BCLS-510ES, BCLS-580, SHINDAIWA CL520, CL590. High quality. Original codes: 50739077. Brand: Tecomec; Made in Italy.