This add-on unit upgrades compatible GRS air systems for expanded versatility and control.Using one simple knob, the user can choose between hand or foot control, whenever desired. This allows optimal working comfort and precision in a wider range of creative freedom. This advanced, patented air logic system provides precision hand power control (using pushing and squeezing motions) without adding moving parts to the handpiece itself.GRS Airtact is comptatible with GRS GraverMax G8 and GraverSmith Air Systems, without additional hookup kits required.All GRS engraving systems and workholding tools are manufactured in the United States of America at the GRS Manufacturing Facility in Emporia, Kansas. GRS warranties its products for a full two years after purchase against defects in material and workmanship.
