Desigination Code Description  1.Diameter  N2, D2  Ø 22m  , Ø 25mm  N3, D3  Ø 30mm  D-LED  2.Type  IS  Shot Handle With 220V. Neon Bulb  IH  Long Handle With 220V. Neon Bulb  3.Shape  R  Round  S  Square  4.Specification  1  2 Position-Stay Put  2