4MAS Butterfly Straight Razor is made of Stainless Steel with an ergonomic design. This top quality razor is made with premium care to assure a durable and long-lasting product that never rusts or tarnish. This razor consists of a swing lock blade insert to prevent the razor from moving. It also gives you very minimum razor exposure to prevent from cutting the person receiving the shave. This is a must-have razor that gives you a feeling of comfort during every use.