Stihl knivsett for iMow 9-pk

9-pack replacement iMOW® blades for all STIHL iMOW® and iMOW® EVO robotic mowers with disc-cut systems. Note: It is recommended to change all three blades after approximately 200 hours of mowing time. If one blade becomes damaged during mowing, you should replace all three blades at the same time. This is to provide an even cut across the lawn.