Replacement Carbide Cutters
The carbide size required is determined by the chain pitch which is usually labelled on the chain saw bar near the motor and sometimes imprinted on the chain itself. This number will be .404, 3/8, .325, 3/8P, or 1/4.
.325″ pitch chain = Medium 3/16″ (4.8mm)
It is recommended to sharpen the chain often instead of waiting until it is extremely dull. This will make sharpening even faster with a quick touch up while reducing wear on both the carbide cutter and the chain itself.