The perfect mate for the Record Pista front track hub. Like the front version, it comes in low-flange only, and is built on luscious bearings for nearly non-existent drag. Threaded on one side and includes a lockring and axle nuts. Please note that Campy quit making track cogs long, long ago. Our recommendation is to pair this hub with a Surly steel track cog. 32 hole only. 284g