Also I hearby declare BH90 to be bullshit and can be ignored and use BH59. In theory the bore is bigger but makes zero diff.
Why use Bh59 and not 90 though?
its what I had in the shed.
@coventry_eagle started
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Also I hearby declare BH90 to be bullshit and can be ignored and use BH59. In theory the bore is bigger but makes zero diff.