1" X 8TPI INSERT FOR NOVA CHUCKS (Most Common)
Teknatool uses an easy and inexpensive insert/adaptor system on all its Nova chucks (apart from the Compac). The insert has different lathe spindle thread sizes internally and simply screws into the back of your Nova chucks. Once the insert is in place, you can then put your chuck onto your lathe and lock it onto the spindle of the headstock with the supplied socket head screw for use while reverse turning.
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