Expert Quality, for removal, inspection or replacement of heated and non - heated oxygen sensors fitted to the following vehicle marques; Audi, BMW, Citroën, Mercedes, Peugeot, Renault, Skoda, GM (Vauxhall/Opel) and Volkswagen. Cut - away sections allow some sockets to fit over wiring harnesses. Sockets have black phosphate finish. Display packed in blow moulded case. Contents: 1 x 3/8" Sq. Dr. 80mm deep socket with 7.7mm wide long groove, 1 x 3/8" Sq. Dr. deep socket with 20.5mm wide long groove, 1 x 3/8" Sq. Dr. Offset square drive socket with 8.6mm wide full length groove, 1 x 3/8" Sq. Dr. 1.1/16" x 74mm deep socket, 1 x 1/2" Sq. Dr. Offset square drive deep socket 22 x 49.5mm with 11mm wide full length groove, 27 x 1/2" Sq. Dr. 85mm deep socket with large side viewing window, 29 x 1/2" Sq. Dr. 90mm deep socket with 8.2mm wide long groove