Ideal 45-359 Carbide DualScribe Fiber Optic Scribe, Black Designed to etch or mark very hard objects including; metals, stones, glass, plastics, ceramics, hardwoods, and concrete 30-Degree single bevel DualScribe reversible blade doubles tool life Solid durable carbide tip insures dependable long lasting use Soft non-slip grip that provides precise control during scribing Carbide scribe comes with black handle for easy identification