Sugino Gigas S-Cubic Track Cog - 12T

The rare 12 Tooth keirin track racing cog from Sugino.
This is part of the GIGAS series of pro-racing track cogs, and finally the S3 coated version is available.
Made In Japan.
NJS certified and stamped, for use in professional Keirin racing.
Note: To use this cog, you will also need a Sugino 12T-specific lockring. The cog is so small, that the chain will rub on the lockring, if you use a regular track lockring.