Drill-Driven Trimmer Spool Winding Cone
A stepped arbor for rewinding string trimmer line with a cordless drill. A 50 mm flange runs into a cone that tapers from 28 mm down to 10 mm, so it centres any spool bore from about 11 to 26 mm. An M5 hex nut (8 mm across flats) sits captive in the base. An M5 x 80 bolt with a fender washer clamps the spool down onto the cone, and you put the bolt head in the drill chuck. The flange also has six check holes for identifying 0.065–0.155 in (1.65–3.94 mm) trimmer line.
garage string-trimmer spool-winder m5-bolt