Features: Made of fine quality manganese steel, wear resistant and high hardness, keen, has a long service life. Designed of double-sided cutting edge, 360 degrees no dead angle cutting. The blade can rotate freely at 180 degrees, and it will rebound automatically when it encounters a hard object. Easy to use and install, cutting more evenly and thoroughly. A practical replacement accessory for the trimmer. Perfect for garden or agricultural use, improving work efficiency.