Tang to Square Drive Adapter.
The standard tach drive for MSD Tach Drive Distributors is a 3/16" tang drive cable. In most cases this type of drive will work, but for those who require the 0.104" square drive (Corvette style), MSD offers a Tang to Square Drive Adapter to fit all MSD Tach Drive Distributor assemblies.
This adapter is included with each MSD Tach Drive Distributor.
