Each model in Z-Series runs on 2-cycle Strato-Charged engine, which doesnt require a heavy catalytic converter to reduce emissions. For light trimming or congested spaces, rely on BCZ2400S, which weighs 10.8 lbs. and runs on 23.6-cc. engine. Use 11.1-lb., 25.4-cc. BCZ2600S for large trimming jobs. Largest model, BCZ3000S, trims grass and cuts stubborn brush. Runs on 29.5-cc. engine, weighs 11.2 lbs., and features standard or bicycle handle. All trimmers boast power-packed head, plus accept fixed trimming line.