Get your work done effectively with the Staedtler Compass STD550WP01. It is made from quality materials for a long life and adjusts quickly and easily. This student compass features resilient sand-blasted and nickel-plated metal parts a non-slip grooved grip and hinged lead and needle legs. The extensions are constructed from plastic. This blue and silver center wheel compass is equipped with a high-quality universal adapter for easy circle drawing with all writing instruments. It includes a spare lead tube with an extra 2mm lead. Use it for completing school work engineering and several other tasks.