Home » 66785 Manual Piston Ring Filer with 120 Grit 66786 Grinding Wheel 66785 Manual Piston Ring Filer with 120 Grit 66786 Grinding Wheel 66785 Manual Piston Ring Filer with 120 Grit 66786 Grinding Wheel. Sale price : $29.54 Category : Automobiles, Parts & Accessories