Kemper SKT Scratch Knife This triangular head is for more defined lines in feathers, hair, grains and other detail needs. The steel blades are replaceable in the smooth plastic handle and is 7 1/2" in total length. Kemper SLT Scratch and Lift Tool The rounded head is excellent for working with stencils in addition to clay lifting and detail work. The steel blades are replaceable in the smooth plastic handle and is 7 1/2" in total length. Kemper SLD Scratch and Lift Duster This useful combination clay tool offers two essential tools in one. On one end is a soft, oval brush for dusting, removing loose clay particles, and restoring fine details to greenware before firing. The other end features a heat-treated spring steel knife that can also be used for adding details and for lifting bird feathers, flower petals, fish scales, and other fine details. Both the brush and knife are firmly set in a hardwood handle. The tool measures 6-5/8" long.