Mathematical instrument geometry set in a handy tin: 12 piece set contains: 17 cm pencil, 15 cm clear plastic ruler, alphabet and number stencils, lab instrument stencil, metal divider compass, 180° protractor, 45°set square, 60° set square, sharpener, eraser and useful fact sheets. CAUTION! Not suitable for children under 6+ years. Choking Hazard. This item contains small parts, and a sharp points.