5-Arm BCD (Bolt-Circle-Diameter) Gauge [Bike Tool]
by _ucas · from Printables
Personal use only
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PLA from £6 inc. UK delivery on letter-sized prints. We slice, print on a calibrated Creality K2 / Bambu A1, QC and post.
Tool for measuring the Bolt-Circle-Diameter of a traditional 5-arm crankset/5-bolt chainring.







