This is a high-quality .325 pitch, 7-tooth Archer replacement spur sprocket with a needle bearing.
Fits Stihl models: 029, 034, 034 Super, 036, 039, MS290, MS360, MS390, MS310
This sprocket replaces Stihl part# 1125 640 2005
Replaces Oregon# 111188X
Archer Chainsaw accessories are made with quality and sold all over the world.