HUSQVARNA 17" 122C 22cc 2 Cycle Gas Powered Line Lawn Grass Home String Trimmer Husqvarna 122C 21.7cc 2 Cycle Gas Powered Trimmer - Curved Shaft Low noise engine - Effective low noise engine design will not disturb you or your neighbors Tap 'n Go trimmer head - Twin line cutting system with Tap 'n Go for quick line feed. Smart Start - The engine and starter have been designed so the machine starts quickly with minimum effort. Auto return stop switch - Stop switch automatically resets to the ON position for easier starting.