Jack Lai wrote:

Is there such thing as an over and under size reamer set for metric sizes,

Yes, but how much over/under size? Usualy you get them +/- 1/100 mm to
3/100mm

Nick
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Motormodelle / Engine Models:
http://www.motor-manufaktur.de
Ellwe 2FB * VTM 87 * DLM-S3a * cubic
more to come ...