This contact breaker Timing Tool Kit comes with an adapter that mounts in place of auto advance bolt. Degree wheel mounts to adapter for really accurate static timing. For use on all motorcycles with points in the timing cover.  

Available with 26 tpi CEI adaptor for early (to 1968) motorcycles or 28 tpi UNF adaptor for later ones (1969-up). Specify which adapter you want below.

Make in the UK.