Spare Blade
From Amazon
Einhell Lawnmower Blade (42cm Cutting Width Steel Blade Lawn Mower Accessory) - Compatible with Einhell Cordless Lawnmowers GE-CM 36/41 Li, GP-CM 36/41 Li, RASARRO 36/40, RASARRO 36/42
Conrad Electronic
Einhell 3405454 RASARRO 36/42 Lawn mower replacement blade