Premium Quality: Made of high-quality stainless steel 420J2 with titanium coating, offering excellent rust resistance, acid and alkali resistance, wear resistance, and long service life High Cutting Performance: Smooth edge with 1mm thickness, razor-sharp for clean cutting from all directions; cuts grass gently and evenly, promoting natural fertilization and maintaining a neat, green, and healthy lawn Titanium Coating: Provides enhanced rust protection and maintains high efficiency even in harsh weather conditions; reduces sediment buildup, long-lasting, and resistant to fading Easy to Install and Reversible: Simple to install and replace using included screws; double-sided cutting tips allow reversal when one side becomes dull Usage: Each blade measures 5cm in length and 1.8cm in width; set of 18 replacement blades with screws; compatible with Bosch Indego Robotic Mower