Swiss made OEM chainsaw chain from Stihl. Stihl saw chain is made for the most demanding cutting conditions and is loaded with professional features. Stihl chain has Oilomatic drive link lubrication slots, which funnels oil directly to the rivet to reduce wear. Stihl chain is also pre-stretched at the factory, which helps eliminate excess adjustments during break in periods. 33RD3 is part of the Stihl Duro 3 series. This chain has a carbide insert welded to the cutting edge of the saw chain. The carbide insert allows it to stay sharp up to 4 times longer than standard semi-chisel chain, which makes it great for abrasive conditions like cutting creosote treated poles, paper rolls, railroad ties, demolition work, frozen logs and sawing in sand impregnated bark. This chain also has reduced kickback and low vibration features. Please note that there is no warranty on this chain, and this type of carbide will break and chip if impacted by hard objects.