Cuts through wood framing, asphalt shingles, metal roofs and doors. Featuring the exclusive Raptor multicut carbide chain. The open double-raker design, heavy tie straps, drive links and rivets ensure longer cutter life. The advanced centrifugal force air injection filtration system keeps 97% of dirt, dust, smoke and water mist from the filter. The KIS-40 safety depth gauge allows safer, more accurate ventilation. It can be adjusted from ¼" to 6" depth or be removed. Exceeds EPA regulations. SPECIFICATIONS: 5.4 HP Engine 4.3 ci-71 cc Dual 2x2 transfer ports Volt Tech Ignition 13,500 RPM no load speed Smart Start compression release Combined choke/throttle lock Kill switch (momentary contact) Carburetor vapor lock isolation Self-ventilated CoolFlo II clutch Low vibration Low noise level