50 cc, 2-cycle engine features Super Clean air filter system, aluminum Professional style clutch cover for more durability, automatic chain oiler, tool-less access to air filter and spark plug, reduced vibration handle with effortless pull starting system - purge and spring assist, a dual post chair brake for better safety and easier on the left side, and an on-board locking wrench holder in handle. 20" bar length. Fully assembled. Includes carry case. 2 year limited warranty. Replacement chain, Model No. D70 (SKU 705535).