The PP4218A is powered by a 42cc 2-cycle gas engine and is outfitted with an 18" steel bar. Some beneficial features of the PP4218A model include an Anti-Vibe handle and over molded rear handle to lessen operator fatigue, automatic chain oiler, Effortless start system, and the Super clean air filtration system. A carrying case and extra chain are included with this model, which is backed by a 2-year warranty. Excellent for general landowner property. management.