The Fractal Vise is tool designed to hold parts of nearly any shape. The rotatable segments allow for the vise to have multiple points of contact on object that couldn't be supported by traditional vise. 
 
Material of the contact points is default ASA-CF (high strength, temperature resistance to 80°C
 
The moving plastic parts on the vise jaws are lubricated with teflon (PTFE) grease.
All metal parts are stainless steel.
8 bearings are used for smooth and stable movement of the mechanism.
The dimensions: 370 x 140 x 60 mm (default size, can be customized).
The distance between the two jaws is 86 mm with aligned fractal blocks.
Clamping force is ~80 Newtons

NOT intended for heavy machining.
 
Credit: https://www.printables.com/@TeachingTech