Features:It is made of high quality stainless steel with high hardness and wear resistance.The blade is incisive and firm, which can be perfectly adapted to the lawn mower and effectively improve the weeding efficiency.The installation and replacement method is simple. The stainless steel blade can be easily replaced by the attached screw and hexagonal wrench.It is recommended that you replace the blade of the lawn mower once a year to improve the efficiency of the lawn mower.Excellent workmanship, stable performance, safety and reliability, is the perfect accessories of mower.Specification:Condition: 100% Brand NewItem Type: Lawn Mower Knife Hex Key SetMaterial: Stainless SteelFitment: Fit for Robomow RXWeight: Approx. 108g / 3.8ozLength: Approx. 18.5cm / 7.3inPackage List:1 x Lawn Mower Knife1 x Hex Key2 x ScrewsNote:1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.