General description 3X Oxygen Sensor Socket Tools Set is designed for the efficient removal and installation of oxygen sensor sockets. This set includes three different socket sizes to accommodate various applications. Technical specifications Socket Size 1: 1/2" Drive x 7/8" x 50mm Socket Size 2: 3/8" Drive x 7/8" x 30mm Socket Size 3: 1/2" Drive x 7/8" x 80mm Material: Stainless Steel Compatibility and accessories Vacuum switch socket - 3/8" drive x 7/8" x 80mm Oxygen sensor wrench socket - 3/8" drive 7/8" x 50mm Oxygen sensor wrench - 3/8" x 78mm x 50mm Installation Professional installation is highly recommended. Instructions are included.