Usage Tips:Premium Stainless Steel ConstructionCrafted from SUS420J2 stainless steel, this blade offers exceptional hardness and durability, ensuring long-lasting performanceCorrosion & Rust ResistantDesigned to withstand harsh outdoor conditions, the blade is highly resistant to corrosion and rust, making it perfect for prolonged useIntegrated One-Piece DesignFeatures a one-piece molded construction for easy installation, ensuring a secure fit with Stihl/Viking robotic mowerPrecision CraftsmanshipEngineered with smooth, burr-free edges for enhanced durability and reliability, offering a flawless cutting experienceSharp Brushed Edge DesignEquipped with a finely brushed cutting edge, the blade remains sharp and wear-resistant, providing efficient and rapid grass trimmingSpecifications:Material: Stainless steel 420J2Dimensions:Length: 20cmHole distance: 9.5cmHole diameter: large hole 8*16mm, small hole 8*10mmApplicable:For Stihl: RMI 422, RMI422 P, RMI 422 PCRMI 522 CFor Viking: iMow MI4 SeriesPackage included:2 x Cutting BladesOther things not included