Description
HSP German built one way hex bearing to with fit all 12mm hex pull starters (typically HSP, HPI, FTX and ACME models). This is a step above the standard one way bearings and recommended for long term use of your nitro car.
It will fit any nitro 1/10th model sold by Serious-RC and provides a universal fit pull start for .12, .15 and .18 engine pull starters (generally 1/10th scale -12mm hex nut).