Oregon 108181 Saw Chain Mini Bench Grinder/Sharpener Additional wheels required to sharpen 1/4-Inch, 0.325-Inch and mini 3/8-Inch pitch chains Comes with one grinding wheel, 3/16-Inch thickness for sharpening 0.325-Inch pitch and standard 3/8-Inch pitch (72/73/75 series) chains Includes a wheel-dressing brick and a template for: depth-gauge setting and wheel contour Runs on standard 115-Volt power 12-Month warranty for defects in material and workmanship