Replace the standard jaws of your GRS MicroBlock + MicroBlock XL with the Jura Master Jaw Set and gain the flexibility of Jura Tools' QC Workholding Fixtures. The entire line of Quick Change fixtures can be quickly swapped without the use of tools. Simply open the Jura Master Jaws to remove the installed fixture and slide a new one into place. Available fixtures include vertical and horizontal clamps, inside and outside ring holders, and shellac/Thermo-Loc® clamps (see related products below).