The Roughneck Chisel Sharpening Kit is ideal for the sharpening of all wood chisels ranging between 6mm and 50mm. The honing oil is a mechanical oil that is petroleum based. There is a strong and solid sharpening guide with a screw for width adjustment. Full sharpening instructions and safety guidance are included on the packaging. https://elecena.pl/product/27203378/roughneck-30-190-chisel-sharpening-kit 2024-11-09 https://elecena.pl/product/27203378/roughneck-30-190-chisel-sharpening-kit 2025-03-10 https://elecena.pl/product/27203378/roughneck-30-190-chisel-sharpening-kit 2025-03-21 https://elecena.pl/product/27203378/roughneck-30-190-chisel-sharpening-kit 2025-09-13