Size selection of chainsaw file

There are three main specifications of chain file of logging saw: 4.0, 4.8 and 5.5mm.

4.0mm, special for electric saw, mainly used for small pitch 3 / 8, 0.050 chain of electric saw

4.8mm, special for medium chain saw, mainly used for chain saw with pitch of 0.325 and 0.058

5.5mm, special for large chain saw, mainly used for large 3 / 8 pitch, 0.050, 0.063 chain saw