This is an Archer 20" HARD TIP Guide bar This guide bar works great on Stihl models 034, 036, 038, 040, 041, 042, 044, 045, 046, 048, 056, 064, 066, MS260, MS261, MS270, MS280, MS290, MS291, MS310, MS311, MS341, MS360, MS361, MS362, MS381, MS390, MS400, MS440, MS441, MS460, MS660 plus other Stihl models.
This guide bar is designed for the professional user! If you are using a 3/8 pitch chain, it would need to be .050 gauge with 72-drive links.
Archer Saw Chain and Archer Guide Bars are known for quality and sold world wide!