http://tinyurl.com/mmk8hnxHitachi CG22EABSLP 21.1cc 2 Stroke Gas Powered Curved Shaft Grass Trimmer (CARB Compliant)Product Review Click on the link for more reviews21.1cc commercial grade engine provides excellent performance and reliabilityS-Start reduces the amount of pull-force required to start the unit by 50%Anti-Vibration System provides maximum comfort for getting more done with less fatigue4-inch semi-automatic trimmer head provides hasslefree operation and holds 13 feet of .095-inch copolymer cutting line.CARB Compliant