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. In fact over 99% of vehicles on there road. To date we have sold 100's of these sets to the motor trade with excellent feedback on the quality and value for money. The Cut-away sections allow the sockets to fit over wiring harnesses. Sockets have black phosphate finish. Display packed in tough blow moulded case. Specification: Chrome Vanadium. Black Phosphate finish. Tough blow moulded case. 3/8" Square Drive: 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" Square Drive: 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.