Package includes: The package includes 4 cutting sleeves and 4 springs, which can meet your daily replacement and storage needs. High-quality materials: Made of ABS and plastic carbon steel, durable, long service life, good stability, impact resistance, cold resistance and oil resistance. Unique design: The special design allows the edge to last longer on the rough surface. Aerodynamics can reduce noise and hose shaking.★Unique design: The special design allows the edge to last longer on the rough surface. Aerodynamics can reduce noise and hose shaking. Easy installation: Easy to install and save the cost of buying a new lawn mower. Ideal for patios, lawns, yards, gardens, crops, landscaping, landscaping, etc.