I just finished flushing my brake system. (Girling calipers, front and rear). Had purchased a pressure bleeder but the cap for the reservoir was not a good fit and fluid sprayed out. So I fashioned a new cap using the cap from a replaced master cylinder I'd kept around. Worked great when pressure was kept under 10 psi. Now, here's my question:

Exactly what size are the hexes on those bleeders. 8mm and 5/15" are too big and 7mm and 1/4" are too small. I managed, using an 8mm deep socket for cracking and final tightening, and an open ended 8mm to control the actual bleeding. But it sure would be nice to have a proper-sized tool, and one that would fit better in those confined spaces on the calipers.

Wonder what Planetman uses?