... b. Pin InsulatorHigh Voltage Lines Pin Type Insulator (ANSI): 56-1,56-2,56-3,56-4,56-5Pin Type Insulator for low & medium voltage lines ... (ANSI): 55-1,55-2,55-3,55-4,55- ... 57-14,57-15 d. Strain insulators for ANSI:54-1,54-2,54-3,54-4,54-5 e. Spool ... Insulators for ANSI & BS 5) Colour: gray,brown,white, ...