The HSA 50 battery hedge trimmer features double-sided blades that cut both directions with droplet-shaped cutters that help secure materials in place while cutting. Combined with diamond-ground blades, this high-speed trimmer operates at 2,800 strokes per minute with minimal vibration and can cut up to 1,000 feet per charge.* The HSA 50 hedge trimmer is compatible with the AK Battery System for homeowners and packs a powerful punch at an affordable price. *Run time per charge may vary depending on usage and application.