The 45 cc YARD DOG 2-in-1 combination chainsaw features 14" & 20" bar and chain, like having two chainsaws in one. A heavy Duty durable case is included to protect your investment. A single cylinder, 2 stroke engine that runs at 2800 RPM with no load. It features a low range kick-back chain brake for additional safety. YARD DOG also wants to make sure your chainsaw lasts a lifetime so we designed an automatic bar chain oil feed system to keep your chain consistently lubricated and It is center balanced with anti-vibration handle for maximum control and minimum fatigue. This combo chainsaw includes a Quick Start (CDI) ignition system and has an easy access chain pro tensioner for fast adjustments.