GENERAL DESCRIPTION Suitable for grass and thin brush, but not for young trees or hard materials. Avoid using this attachment for edging or working with bricks. TECHNICAL SPECIFICATIONS Material: Plastic Length: 67 mm Quantity: 100 replacement blades for RAC158 OTHER INFORMATION For optimal use, put the blades in water overnight before use to extend their life. Manual measurement, there may be an error of 1-3 cm. The actual color may vary slightly from the color shown due to lighting effects.