Usage Tips:•【Premium Stainless Steel Construction】Crafted from SUS420J2 stainless steel, this blade offers exceptional hardness and durability, ensuring long-lasting performance •【Corrosion & Rust Resistant】Designed to withstand harsh outdoor conditions, the blade is highly resistant to corrosion and rust, making it perfect for prolonged use •【Integrated One-Piece Design】Features a one-piece molded construction for easy installation, ensuring a secure fit with Stihl/Viking robotic mower •【Precision Craftsmanship】Engineered with smooth, burr-free edges for enhanced durability and reliability, offering a flawless cutting experience •【Sharp Brushed Edge Design】Equipped 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 8*16mm, small hole 8*10mm •Applicable: •For Stihl: RMI 422, RMI422 P, RMI 422 PCRMI 522 C •For Viking: iMow MI4 Series Package included: •2 x Cutting Blades •Other things not included