Behind the oSa® brand is a stringent recording and monitoring system for all manufacturers to ensure the risk of injury to you, as a user, is as low as possible. Obligatory factory inspections by independent experts and proof of a certified quality management system are mandatory prerequisites for membership. Each member is committed to oversee the entire manufacturing process and carry out production related manufacturing controls in accordance with EN standards. Products from oSa members are traceable. The oSa® mark on grinding tools offers both maximum safety while cutting and grinding, as well as clear orientation when making a purchase decision. If avoiding unnecessary risk as a user of grinding tools is important to you, so should be the oSa safety symbol.