NOVA IDNS 1-Inch 8TPI Chuck Insert/Adaptor allows you to 'adapt' your Insert Type NOVA Chuck to a 1-Inch 8 Lathe. Allows you to keep the same chuck and accessories if you change your lathe - you only need to change the insert/adaptor. The internal thread is 1-Inch 8 and the external thread matches t...

The insert's external thread fits into the back of the chuck. The internal thread matches that of your lathe's headstock spindle.- Got ANY Problem ? Msg seller to get full REFUND!!!!