8728Wire end ferrule, 8728, KLAUKE. Insulated twin cable end-sleeves for fine and superfine stranded conductors, according to DIN EN 60228 Cl. 5 and 6, for looping through terminals. ColorISO 8728:2014 specifies the construction, performance, and type testing for gyro-compasses required by Regulation 12 of Chapter V of SOLAS 1974 (as amended). General information.