Premium Stainless Steel ConstructionCrafted from SUS420J2 stainless steel, this blade offers exceptional hardness and durability, ensuring long-lasting performance Corrosion amp Rust ResistantDesigned to withstand harsh outdoor conditions, the blade is highly resistant to corrosion and rust, making it perfect for prolonged use Integrated One-Piece DesignFeatures a one-piece molded construction for easy installation, ensuring a secure fit with StihlViking robotic mower Precision CraftsmanshipEngineered with smooth, burr-free edges for enhanced durability and reliability, offering a flawless cutting experience Sharp Brushed Edge DesignEquipped with a finely brushed cutting edge, the blade remains sharp and wear-resistant, providing efficient and rapid grass trimming Specifications Material Stainless steel 420J2 Dimensions Length 20cm Hole distance 9.5cm Hole diameter large hole 816mm, small hole 810mm Applicable For Stihl RMI 422, RMI422 P, RMI 422 PCRMI 522 C For Viking iMow MI4 Series