TribleA Sleeve Adapter for Cobra KingLtd / King F6 / King F6 + / Fly z / Bio Cell Driver 0.335 - 9-12 Degrees Aftermarket 8-position adapter fits the Cobra BIO Cell, BIO Cell Plus Fly Z and Fly Z+ drivers. For use with a 0.335" shaft Right hand Settings are as follows: 9.0 / 9.5 / 9.5 Draw / 10.5 / 10.5 Draw / 11.5 / 11.5 Draw / 12.0*