Broad Compatibility:
1.There are 2 pin on the chainsaw sharpener for fixing the chainsaw bar. The second pin is adjustable.The distance between these 2 pin (holes) is about 0.7-1.3inch.
2.If your Chainsaw bar had only ONE hole, you can remove the second pin to fit it .
3.This saw chain sharpener fit for 14 / 16 / 18 / 20 inches chainsaw bar. Not compatible with ECHO 16 inches chainsaw.