Top Mount Decompression Valve Reduces Required Start Up Force by 70%. 14-in Cutting Wheel. Compliant with CARB Tier 3, EPA Phase 2 and EU Stage 2 Regulations. New Scavenging losses rejection (SLR) Muffler recycles exhaust unburnt gas emissions for increased operational efficiency and cleaner emissions. Advanced 5 Stage Air Filtration System for cleaner operation and enhanced operational life. Large Air Intake for maximum engine cooling . Reversible Cutting Arm enables cutting disc to be side or center mounted for optimal operational versatility in a variety of applications. Electronic Ignition with rev limiter. Always use with 2 Cycle Synthetic Oil. Includes: 14in Cutting disk for stone 20mm, tool kit, water attachment kit.