Name: CS45 Chainsaw Details: 1) Power: single cylinder, two-stroke, air-cooling gas engine 2) Displacement: 45.6cc 3) Rated output power: 1.8kW/7,500rpm 4) Loading speed: 2,800rpm 5) Ignition system: C.D.I 6) Guide bar size: 18" / 20" chain 7) Pitch: 0.325 / 0.375" 8) Chain gauge: 0.058" / 0.063" 9) Compression ratio: 7.5:1 10) Chain brand: Chinese 11)Packing szie:56.5*47*35cm