Supertec introduces three sizes of jig grinders covering a full range of capability. Models offered include the pictured JG-510M (20” x 12” x 4” x 13” X,Y,Z,W), the JG-1270CM (47” x 27” x 4” x 16”) and the JG-1010G (39” x 39” x 10” x 16”), a double-column style.