Made from semi-rigid, non-reflective, white plastic sheet with non-reflective black letters. Each chart comes with a set-up kit. Letter sizes: 60/6, 36/6, 24/6, 18/6, 12/6, 9/6, 7.5/6, 6/6, 5/6. The letter size is printed under each line. The DX charts have one 6/6 line. This chart is available for test at 3, 4, and 6 metres distance from patient . Chart size (DX version): 3 metres 280 mm x 100 mm 4 metres 345 mm x 135 mm 6 metres 510 mm x 200 mm Product References for the Single 6/6 line: EYTT3DX* – 3 metres EYTT4DX – 4 metres EYTT6DX – 6 metres (*Ideal for domiciliary and doctors rooms.)