Hexagonal sockets are for removal oh the electrical solenoid from the modern injector.
1/2”square dr.x78mm length
Application:
TATHT817503:25mm Hex-Simen injector as found on PSA,Ford,Toyota,etc.
TATHT817504:27mm Hex-Simen piezo injector as found on PSA
TATHT817505:29mm Hex-Bosch injector
TATHT817506:30 mm Hex-Bosch injector