was having a devil of a job unfastening the top bolt for the starter motor to put on a new earth lead back to battery. ring spanners wouldnt fit, light spanners too long; sockets not enough clearance.

Came across some tiny spanners in the bottom of an old toolbox (not mine) and one chunky little number said 'austin' on it... and the 1/4 fitted and worked like a dream. As of course it was designed to.