Details Requires only a screwdriver to zero gap blades The Andis Blade Zero Gapper allows you to easily adjust your trimmer blades to achieve a closer, "zero gap" cut favored by barbers. This tool provides a simple, accurate way to align the upper and lower blades on your Andis T-Outliner, Outliner or Styliner trimmer, leaving you with a closer cut than the factory-equipped blade set. Directions • Use a clipper cleaning brush after each cut to remove fragments of hair from the blade. • Properly disinfect to kill germs and viruses by using Cool Care Plus.® Review the contact time necessary for proper disinfection. • Use the 5-point oiling system to lubricate your clipper and keep it running at top performance: 3 drops across the teeth of the blade and 1 drop on each back rail. • If you notice a decrease in performance after cleaning & oiling your blade, replace the blade to maintain peak cutting performance. Note: If you have a detachable blade clipper, consider replacing the blade drive at this time. • Keep your cord well cared for – never wrap it around the clipper. • Review the Use & Care instructions provided with your tool, as each one requires unique attention.