There are two sizes of these new adapters from Jimmy Clewes Tools.
Both sizes have an outside diameter of 5/8″ to fit into the 5/8″ tool handle.
Use the 1/2″ adapter on a 1/2″ tool tang to fit the tool into a 5/8″ tool handle.
Use the 3/8″ adapter on a 3/8″ tool tang to fit the tool into a 5/8″ tool handle.
Use these tool adapters combined with Jimmy Clewes 5/8″ Quick Release units so you can use one handle for as many tools (3/8″, 1/2″ and 5/8″) so you become more efficient at the lathe. This is also a great solution to allow more portability in your tools if you travel to club meetings, classes, demonstrations and other woodturning workshops.
See Jimmy Clewes Woodturning Tool Handle System video …