Feature 1. Good quality blades are convenient for groundwork, which improves the build class more. 2. Screw control ensures precise blade adjustment. 3. Over-built gearbox assures long service life. 4. Thickened aluminum alloy reduction box, strong and durable 5. Detachable outer circle, suit for big and small space 6. Solid structure design, working stably, better performance 7. Large-diameter carbon steel which has been strictly heat-treated, more durable 8. Lifting hook is available as optional. 9. The centrifugal safety switch shuts the engine down in the event of the operator losing control of the unit