Recommended for very blunt or damaged workshop and garden tools, knives or scissors. Simply follow the original edge and draw the Tungsten Sharpener from the heel along the blade and off the end. The sharpener has an integral oil holding sponge to oil tools after sharpening. Pruners and Loppers with bypass action are sharpened only on the outside of the blade. Anvil tools are sharpened on both sides. Knives, Sickles etc: Sharpen following original edge – usually both sides of the blade. For finishing off or perfecting a keen edge use DP100F Fine Diamond sharpener. ALWAYS SHARPEN WITH GREAT CARE!