Clutch gives full control of the machine. The transmission is also less stressed, clutch assures a longer working life of the machine, Anti-vibration system for enhanced operator comfort, Easy start system, Compact & lightweight, Easy filter inspection system, Ergonomic loop handle, 2-thread Tap& Go nylon head: You decide when to extend the thread hitting the head on the ground, You can save unnecessary loss of thread when not needed (e.g. for bordering operation along walls etc..)