Pull Start Thumb Screws for Standard Pull Start From Axis R/CNamed after their genius inventor, AKA PegLeg on the forums, these thumb screws are the perfect solution for those hard to get to pull start screws. Each screw consists of a knurled knob, lock washer, aluminum standoff and a 90 durometer o-ring press fit to lock the assembly together. Separate kits available for the standard CY / Zenoah and Turtle V2 pull starts.Note: These screws may be used externally with a pull start pre filter (Outerwares) if desired. This would require four holes to be poked in the filter material.