45cc professional-grade, 2-stroke engine for outstanding performance Aluminum handle with rubber over-mold for improved comfortAutomatic, adjustable clutch-driven oiler for reduced oil consumption Available in 16″, 18″, and 20″ bar lengthsHeavy-duty, easy-access, automotive-style air filter for superior filtration Side access chain tensioner for quick chain adjustmentsVibration-reduction system for operator comfort