[Premium Quality] Made of high quality 420J2 stainless steel with titanium coating, excellent resistance to rust, antacid and alkali, wear-resistant and long service life. [High Cutting Efficiency] Soft edge with 1mm thick, razor sharp, gently mow the lawn in all directions, keep only a little grass at a time, fertilize the soil naturally, keep the lawn clean, green and healthy [Titanium Coating] Not only that, it provides better protection against oxidation, but also keeps the gas trimmer upright with high efficiency in unpleasant weather, so less deposits build up and the service life is extended. [Easy to Change and Reversible] Very easy to install and change the screws (included), the tips are double-sided, you can move them back from one side to the other. [Replacement Blades] Length 5cm, width 1.8cm, replacement 18pcs with screws, Bosch Bosch Indego robotic mowers perfectly fit. Product description Replacement blades for Indego mowers - specification Blades: 420J2 stainless