Vicmarc V00649 VM 90/100 Multipurpose Jawset
By removing one or more of the dovetail segments from these jaws, they are adaptable to a variety of uses. The wide range of expansion and contraction of the Uni-Chuck provides for unique adaptability when using these jaws.
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.