BCX4500 EGO 56V Commercial Carbon Fiber Shaft Bike Handle Metal Blade Brush Cutter (Bare Tool Only)Tech Specs 35cc gas engine equivalent with 10% more power than leading gas brush cutter models Brushless motor delivers 1,600W max power, 900W rated power Runs up to 60 minutes on low with a 56V 7. 5Ah ARC Lithium battery (available separately) Carbon fiber shaft for ultimate durability Three speed digital control: 3,500 4,500 5,700 RPM High strength 12 inch, three tooth blade; compatible with 17. 5 inch string trimmer head (available separately)