Shear scraping is an enhanced method of wood turning which relies on the presentation of the scraper at an optimum shear angle of 45 degrees. The slicing action is safer and produces such a superior finish that sanding is often unnecessary, plus the risk of the cutter digging-in is virtually eliminated. This External Shear Scraper (#63205) from Robert Sorby has a Square Cutter which is fixed on 3/8" square shank. The shank sits firmly on the tool rest and presents the cutter at 45 degrees to the work piece when used in each direction. Cutter can be re-positioned several times before the need for re-sharpening, which is done by honing on the top face. The cutters for both the Internal (#63109) and External (#63205) Scrapers are fully interchangeable so, for example, if you already have an internal shear scraper can fit the external cutter and vice versa. 10" Ash handle. Overall length is 18-1/2". England