Homelite/Ridgid/Ryobi String Trimmer Line Cut-Off Blade. Manufacturer's Product Number: 638016003.
The Homelite/Ridgid/Ryobi Cut-Off Blade #HM-638016003 is a cut-off blade for use with your string trimmer which will automatically cut off the string at the optimal length for cutting your grass or weeds. With this attachment, there is no need to manually cut the string length for optimal cutting reach and performance.