The Bahco 529-SK Sharpening Kit contains: 1 x Honing Guide with a screw for width adjustment. Allows for chisels up to 50mm and plane irons with an angle setting at 25° and 30°. 1 x Sharpening Stone with a coarse surface for initial sharpening and a fine surface for smooth finishes. Aluminium oxide grit, rough side 240 grains. 1 x Bottle of Honing Oil (20ml). Provides needed lubrication during the sharpening process.