Guide Bar 14" for Stihl MS 150 / MS150 T Chainsaws Genuine Stihl Part OEM Number - 3005 008 3409 The combination of this particularly narrow guide bar with the 1/4" Picco chain (designed especially for cordless chainsaws and the MS 150 / MS150 T), offers considerable savings in weight coupled with improved cutting performance. Like all STIHL guide bars, it is made of high-grade chrome molybdenum steel.