Small, light, powerful and dependable. An entry level petrol chain saw built for professionals. Fitted standard with 12″ (30cm) or 14″ (35cm) guide bar^. The CS-310ES is easy to start, easy to maintain and won’t let you down. Professionals depend on it. Featuring a 34.0 cc professional grade engine, giving exceptional power to weight ratio. ECHO chain saws are all designed to the same professional standard, with no exceptions. Hard working, high quality with renowned Japanese build standards. Superbly balanced and lightweight making it ideal for a diverse range of jobs.