• Designed for expanded dovetail and reverse dovetail for gripping footed bowls
  • One of the most popular accessories for mounting 12-14″ bowls
  • Same jaw fixing system across all NOVA chuck models – total system interchangeability
  • All NOVA Chuck accessory jaws are designed to hold in the expansion and contraction modes
  • 6-Year Warranty

96.8mm (3.81”) – 118mm (4.64”)

Square: 77mm (3.03”) – 56mm (2.2”)
Spigot: 99mm (3.89”) – 76mm (2.99”)
Actual sizes may vary depending on which NOVA chuck is being used.



The NOVA 100mm/4″ Chuck Jaw Set is one of the most popular jaws to mount 12-14″ bowls.  They are built with a turning dovetail profile to maximize strength without jeopardizing wood fibers and can hold both in contraction and expansion modes. High tensile 1045 steel makes up the JS100N for precise closing, durability, and long life. Comes with 4 jaw segments and instructions.These contracting jaws grip spigots and bowl feet up to 3-1/2″ diameter or square billets from 2-9/16″ to 3-1/8″. Uses the standard fasteners that come with your NOVA Chuck.

Universally fits any NOVA chuck* for maximum flexibility. Duplicate accessories are not needed for different NOVA Chucks. *Some accessories such as larger jaws are only suitable for use on the larger NOVA Chucks, please check the manual prior to using.


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