Keep your lawn looking pristine with these high-quality replacement mower blades designed for John Deere equipment. This 2-pack of blades is specifically engineered to fit multiple John Deere models including X354, X370, Z335E, Z335M, X330, Z345M, and Z345R. Made to match the specifications of the original M170639 blades, these USA-fit replacements ensure proper installation and optimal cutting performance. These durable mower blades are crafted to deliver clean, precise cuts across your lawn, maintaining the professional finish you expect from your John Deere mower. Regular blade replacement is essential for maintaining your mower's cutting efficiency and your lawn's health. These replacement blades provide an exact fit, making maintenance straightforward and helping you keep your John Deere mower operating at peak performance.