Andis 04604 Outliner II Trimmer replacement possesses a square shape. The blade is constructed of stainless carbon steel and has no spaces between the teeth. The heat- and rust-resistant close-cutting square blade provides a cooler and more comfortable smooth-cutting experience. Since the blades have high teeth and room between them, longer hair may travel through them more quickly, which makes them good for light fading. Trimmers with attachment combs perform well for keeping beards. Close-cutting trimmers are required for precise fine work on hair, beards, and mustaches. It is the trimmer model GO and GTO replacement blade set. It works with the Andis T-Outliner or Outliner II Trimmer and Headliner Shave & Trim LS.