Use for Installation and removal of head bolts compatible with Subaru flat boxer engines. Services 1999-2020 Subaru Baja, Forester, Impreza, Legacy, Outback and Saab 9-2X Aero. The overall length (63.60mm or 2 1/2”) is optimized to clear valve train components, maximizing work space between the cylinder head and frame. Socket size: 14mm x 12 pt. Drive: ½”.