T-Outliner® Blade. Cut close and precise with ferociously strong, carbon-steel teeth that start sharp and stay sharp for heavy-duty shop and salon use. Zero-gap this classic blade for ultra-close cuts, fades and design work. This polished replacement fits in GTO, GO, SL and SLS trimmers with a secure, screw-in attachment. Easy to install, clean and maintain, the T-Outliner Blade is ready for whatever comes next.