Downey Glass Industries has a wide selection of horizontal & vertical drilling equipment from Italy & Austria. This equipment gives us the capability of providing custom and production drilling solutions. We have the following selection of high quality diamond drill bits manufactured in Italy: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 3/8", 1 1/2", 1 3/4", 1 3/8", 2", 2 1/4", 2 1/2", 3", 3 1/2", 4 1/2" & 5 1/4".