The card scraper holder
maintains a perfect arc and is as simple as turning a screw. Once the bow
is set you only have to control the cutting angle. Accepts scraper up to
6-Inch in length. The handle is 8 x 2-1/4".
It's designed to keep your thumbs from being cut on
the edge of a scraper and to assist in keeping the curve if you are
scraping for a long period of time.