VEVOR engraving vise (pin vise): My unit arrived with a GRS logo on a plastic button next to the jaws. Not being familiar with GRS equipment, I won't comment on workmanship except to say that this vise seemed to be well machined and assembled with very good satin-chrome and polished-chrome finish, and no burrs or marks. All accessory tooling fit as was intended and the action of the jaws was as smooth as can be expected. There was some catch and rub when rotating the upper half of the ball but because the entire ball may be rotated to any angle on the (nylon? delrin?) base, I don't consider that to be important. In use the two halves will be locked together.One of the features which I appreciate about the product is the set of tapped holes in the jaws and the cap screws to fit them included with the unit. You can create your own specialized jigs of wood, plastic, aluminum, etc. for whatever you work on. There are a couple of low-temp, moldable, reusable plastic products which are sold for this purpose. This device is heavy enough (around four pounds) that it will be stable for light assembly and glue jobs by itself; and there's an even heavier version available.If I were a professional engraver, things I would ask for would be the ability to lock the ball in position on the base and to screw the base to a work table. The rotatable upper half-ball would then make more sense to me. As it is though, the product is useful for anyone having to hold small and/or delicate items while working on them; and at its price point, good value.
John D 
