Since 1997 M&T has produced massive brass door handles. Brass is a high quality material with several advantages including one important attribute that tended to slip under the radar until 2020: The Massive brass with a high copper content that has been used by M&T for over 20 years, creates high antimicrobial products, very quickly and effectively eliminating all bacteria and viruses that come into contact with their surface; several times faster than materials containing silver which are known as powerful bacteria killers.