Hexagonal socket are for removal of the electrical solenoid from the modern injector.
1/2”square dr.x78mm length
3/4”square dr.x75mm length
Application:
TATHT817503:25mm Hex-Siemen injector as found on PSA,Ford,Toyota,etc.
TATHT817504:27mm Hex- Siemen piezo injector as found on PSA
TATHT817504:29mm Hex-Bosch injector
TATHT817506:30mm Hex-Bosch injector