Draper expert 3 3 and 1 2 sq dr 39 lambda 39 or oxygen sensor socket set draper expert 89765 b i expert quality i b for removal inspection or replacement of heated and non heated oxygen sensors fitted to the following vehicle marques audi bmw citro 235 n mercedes peugeot renault skoda vauxhall opel gm and volkswagen cut away sections allow some sockets to fit over wiring harnesses sockets have black phosphate finish display packed in blow moulded case draper exper