Product Description Color: Gold 30 spare blades Application Note 1.The blades are extremely sharp, please note this when assembling. 2. If the cut looks uneven and dirty, it's time to change the blades. Please always exchange all used knives for a new replacement blade! 3. We recommend that you replace the screws directly when changing the blades. 4. Flipping the blade doesn't make sense, because the rotation direction of your robot lawn mower changes normally. Feature: 1. [SMOOTH CUT IMAGE]: Due to the thickness of 0.75mm and weight of 3g, the auto trimmer replacement blades produce an even and regular cut. The axle load is NOT affected by the slightly higher weight! 2. [LONG SERVICE LIFE]: The blade set is made of stainless steel, which guarantees a long service life. The supplied screws are also STAINLESS! 3. [HIGH SECURITY]: The robotic replacement blades for the automatic motor can not break the use of high quality materials. Even if the blade encounters resistance (stones or similar) - great for pet and child safety! Sold by Briday Store