Hex profile. Special socket for installing and removing difficult-to-reach lambda sensors. For almost all vehicle types. Time-saving work even with difficult-to-reach lambda sensors. Prevents the removal and installation of the protective cover. Long and narrow opening model. For professional and damage-free use. Universally applicable and very resistant to loads. Insert carrier according to standard. DIN 3120/ISO 1174. with ball race. Chrome-molybdenum.