Grizzly T10126 Spiral Cutter Head for G0490, 8-Inch We've found yet another source for high quality spiral cutter heads these cutter heads feature 4 spirals and German-made carbide inserts for an inbred These cutter heads feature 4 spirals and German-made carbide inserts for an incredible finish To determine correct fit see the cross-reference chart on page 48 of our catalog or the specific catalog page for your machine