"These Faceplate Rings are screwed to the workpiece and held by expanding the Dovetail Jaws that come standard with the chuck. They come in handy when the workpiece needs to be removed and then replaced. We offer three sizes of Faceplate Rings. The 3-1/2'' size fits both chucks, while the smaller 2-3/4'' fits the VM100 only and the 4-3/4'' fits the VM120 Only."
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