EXPERT 22MM 3/8" SQUARE DRIVE OXYGEN SENSOR SOCKET - Expert Quality, for Lambda sensors. Special slot in the side of socket for sensor wire clearance. Also suitable for diesel injectors found in Mitsubishi, Nissan, Opel, Vauxhall and VW vehicles. Manufactured from chrome vanadium steel hardened, tempered and chemically blacked for corrosion protection. Display packed.