I have done a load of googling on this and haven't found anything conclusive. Does anyone know the front disk and rear drum brake bleed screw sizes/specs? The rear takes a 7mm spanner and the front a 9mm (or are these imperial 1/4" and 3/8"?). I need to buy at least one for the front as its rounded a little and I just about got it off by putting a deep 3/8" socket on it and gently tapping it to break the seal. I think next time I do it I won't be so lucky so best change it. Odd thing is the other side took a 9mm socket (3/8" is about 9.5mm), or maybe it just fitted better due old age and rusting? These cars are made in Germany so it doesn't make any sense these odd imperial sizes? Also googling says all Fords use M10 1mm bleed screws, but that obviously isn't true!