●For removal, inspection or replacement of heated and non-heated oxygen sensors fitted to the following vehicle ; Audi, BMW, Citroen, Mercedes, Peugeot, Renault, Skoda, Vauxhall/Opel (GM) and Volkswagen. ●The Cut-away sections allow the sockets to fit over wiring harnesses. ●Specification -Chrome Vanadium -Black Phosphate finish *3/8" Size: -3/8" x 80mm deep socket with 7.7mm wide long groove -3/8" x 90mm deep socket with 20.5mm wide long groove -Offset square drive socket with 8.6mm wide full length groove -1.1/16" x 74mm deep socket *1/2" Size: -Offset square drive deep socket 22 x 49.5mm with 11mm wide full length groove -27 x 85mm deep socket with large side viewing window -29 x 90mm deep socket with 8.2mm wide long groove