I'd like to repack and adjust the bottom bracket bearings on my 89 Bianchi Campione D'italia.
The bottom bracket requires a pin spanner. I am guessing that the green one, the SPA-1, with 2.9mm pins is what I need. However, the adjustable one, SPA-6 has 2.2mm pins. Are there really .7mm differences in some of these hanger cup holes?
Park's site kinds of acts like these are interchangeable. Will either work? Obviously I'd like to purchase the adjustable one but not sure about the pin size difference.