Norton Quantum 3 cutting discs have been specifically developed to address the needs of the construction and welding industries for more aggressive, faster and more comfortable cutting experience Made from the best ceramic grain technology and a newly engineered bond system enabling higher grain retention for longer life and a reduction in grinding temperature Norton Quantum 3 provides three key benefits for the end user: Better operator comfort with reduced hand fatigue from less cutting vibration. Less cutting time, a sharper wheel for high metal removal and reduced pressure from faster cutting action. Less downtime and waste with longer disc life using fewer discs.