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Standard Jaws are supplied with the chuck, but also available to purchase separately.

The sizes indicated on the drawing are when the jaws form a perfect circle.  VM90 and VM100 chucks provide approx. 38mm of expansion beyond these specified sizes. The Standard Jaws have an internal dovetail angle of 7 degrees for clamping and an external dovetail angle of 8 degrees for expanding.

Standard Jaws VM90/100