5PCS Hand Tool Set Oxygen Sensor Socket And Thread Chaser Tool Set Manufactured from chrome vanadium steel and impacted for strength and durability.Most popular vehicles that they fit include Audi/BMW/Mercedes/Peugeot/Renault/Skoda/Vauxhall/Opel/GM/Volkswagen.Heat treated oxygen sensor socket 1/2" drive x 7/8"(22mm) x 50mm longVacuum switch socket 3/8" drive x 7/8"(22mm) x 31mm longVacuum switch socket 3/8" drive x 7/8"(22mm) x 6pt x 80mm long