Carlton K1L-BL-72, which translates to .325 pitch, .050 gauge, full chisel, bumper link, 72 drive links. This is a popular size for Husqvarna chainsaws such as 50, 51, 55, 340, 345, 350, 346XP, 351, 353 etc. using 18 inch bars. Your saw maybe set up with 3/8 pitch, these are .325 pitch. $16 cash 620-755-822six Have the same chain in .058 gauge.