This is the Heli-Max One-Way Starter Shaft with 6mm Hex Size.
FEATURES: Blue anodized alumium base with factory installed one-way bearing Steel shaft with 6mm hex is secured to the base with a 4x4mm set screw (requires a 2mm hex wrench for removal - GPMR8011) Press-fits into a standard rubber starter insert
INCLUDES: 1- One-Way Starter Shaft with 6mm size hex
REQUIRES: A engine starter with standard size Spinner Insert
SPECS: Length: 9.25" (235mm) overall with base and shaft Diameter: 1" (25mm) base Diameter: .28" (7mm) Hex: 6mm