12 Stone Chisels. This is a new set of 12 assorted stonechisels. Great for carving stone. Each stone chisel measures approximately 5 3/4" (146 mm). We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.