10-Inch Round Floor Cleaning Brush Head, Lawn Mower Replacement Head - Nylon Cleaning Brush, Floor-Safe, Durable Wear-Resistant Material

The square threads are significantly more effective than round ones. Nevertheless, one should not expect wonders regarding durability.

Very well

Strong line, square cross-section. Protrudes slightly beyond the protective cover, so all the grass flies onto the legs.

Approached the battery trimmer. I can't check the operation yet - the grass hasn't grown yet. Thank you anyway.

base made of plastic, there are questions about reliability, haven't tested in operation

Full set, everything is excellent, it fit the battery-powered scythe