Frost Backbore to Diorio/Tottle Backbore Adapter
You can use your Frost threaded* backbore on your Diorio/Tottle threaded top or cup section.
The adapter, pictured left center, threads onto the Frost threaded* backbore then a Diorio/Tottle threaded cup or top can thread onto the adapter.
*Frost backbore threads are compatible with Warburton, Parke, Pickett, Kanstul, among others.
*To accept the adapter the 'blank' of the backbore needs to be 'turned down' 0.050". The backbore will still work with Frost cups and tops without the adapter. Alteration of the backbore is included with the adapter.
