Wago 6mm 2 conductor terminal block awg 28 12 281 series wago 281 904 wago 281 904 6mm wide 2 conductor through terminal block atex ex i colour blue for wire sizes awg 28 12 pack size 50 wago 281 904 6mm 2 cond through trm block atex ex i blue awg 28 12 50pk