On Aug 3, 2023, Mick Grochowski from Norfolk, VA, USA wrote:
"We wanted to re-use the original banjo bolts on the MGA brakes. There were several small nicks and gouges, so we decided to sand them out. The surfaces need to remain parallel, so we devised a spring loaded, clamp mechanism, with opposing sanding discs, that could be used in a hand drill. The results were better than expected".

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Video of the tool in operation.
Banjo fittings used on MGA

PART NO. SPL.PAGE DESCRIPTION 3H544 15.E.2 Banjo for slave cylinder -(clutch, 1500) -Fin.(C)11767 3H544 15.M.2 Banjo -master cylinder -(for clutch pipe) 3H544 16.M.3 Banjo -master cylinder -(for clutch pipe) -(std.model 1600 and 1600-MK-II) 27H7164 15.H.4 Banjo connection -change to AHH5634 Com.(C)27989 (disc wheels), (C)28540 (wire wheels) AHH5634 15.H.4 Banjo connection -(rear drum brakes, 1500) -Com.(C)27989 (disc wheels), (C)28540 (wire wheels) -(was 27H7164) BHA4139 16.M.5 Hose -brake (front) (MGA 1600, 1600-MK-II) ACH8977 15.D.3 Pipe -flexible -between carburetors -(fuel pipes, 1500) ACH8977 16.D.3 Pipe -between carburetors (flexible) -(fuel pipes, 1600) ACH8977 TC.D.3 Pipe -between carburetors (flexible) -(fuel pipes, Twin Cam) AUC1832 15.D.5 Union -banjo -double -rear -(carburetors, 1500) AUC1832 16.D.6 Union -banjo -double -rear carburetor -(carburetors, 1600) AUC1832 TC.D.4 Union -banjo -double -(carburetor, Twin Cam) -for AUB9055 Note: Fittings ACH8977 and AUC1832 are counterbored on one side. For this the sanding disc and its backing plate must be the correct diameter to fit into the counterbore.