Gas Chainsaw, Model 450 RANCHER - 18", .325 pitch, .050 ga. 50.2cc chainsaw, single pack in PowerBox. Sku: 970 61 31-28 Blaze through any task with the Husqvarna 450 Rancher. This robust gas saw features Smart Start technology and air purge to deliver best-in-class starting performance.* Our proprietary X-TORQ engine delivers superior performance, increased fuel efficiency and low emissions. And the ergonomic design with LowVib technology make this saw comfortable to use, even in demanding conditions.