There are several pitches of chain; this is the average distance between rivets. The most common pitches are 1/4" (top handle arborist saws only) .325, 3/8", and .404. Yours is either .325 or 3/8". To compound the issue, there are three common gauges (thickness of the drive links). .050, .058, and .063. Huskys are usually .050 or .058.