GY20852 Durable Material: Our lawn mower blades are made of sturdy steel that is not easily worn, bent or broken. This can effectively help professional horticulturists or gardening enthusiasts easily improve work efficiency. GY20852 Upgraded Structure: The structure of the mower blades has been carefully optimized to enhance overall balance and prevent vibration during operation, effectively protecting your lawn mower from damage. GY20852 Humanity Design: Sharp mower blades and powder coating not only achieve efficient and uniform cutting effects without leaving grass debris, but also protect the palm during installation and enhance outdoor durability. GY20852 Wide Adaptability: ELITEWILL lawn mower blade compatible with most 48 inch John Deere mowers JD LA130 LA140 LA145 LA155 LA165; 145 155C D140 D150 D155 D160; X140 X165 Z245 Z255 Z355E Z355; S140 S160 S170 X140 X165 X166 X167 E140 E150 E160 E170. Replaces OEM #'s GY20852, AM141035, GX21784, GX21786. GY20852 Bolt on Installation: Our lawn mower part is very convenient to install on your lawn mower, and each package comes with installation instructions for all hardware and accessories. Help you create a organized garden, farm, or courtyard environment. Upgrade your lawn mower with these durable and long-lasting mulching blades. Designed to fit select mower models, this set of three high-quality blades is made from sturdy steel for reliable performance. The unique star-shaped holes promote optimal grass circulation and cutting, while the curved edges ensure a clean, precise cut every time. Easy to install, these blades will keep your lawn looking pristine and well-manicured all season long. Always prioritize safety by following the manufacturer's instructions for proper blade replacement and maintenance.