This is an Archer 18" 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 .050 gauge with 66 drive links.
Archer Saw Chain and Archer Guide Bars are known for quality and sold world wide!