Metal letter Signs are very light weight. While made from thinner material than most aluminium letters, stainless offers a wide variety of benefits. Mirror polished faces and edges are a popular finish on stainless letters. Stainless letters are also available in much smaller sizes than are aluminium channel letters. You can also choose a titanium finish on our stainless steel letters that is available in both mirror and Matt finish. Titanium gives the letters the look of brass at a fraction of the cost and without the worry of tarnishing.