FrostBite 3/8" pitch, .050 gauge, 72 drive links for a 20" bar.
Commonly fits most Stihl and some Husqvarna chainsaws.
FrostBite Chain is deep cryogenically frozen to -320 degrees F that hardens the metal to create a lasting chain. This chain is a harder chain, so it can be more difficult to hand sharpen in the field.