Specifications Name: Heavy duty Universal Robot Lawn Mower Accessories Material: Stainless steel Size: 3.5 x 1.8c x 0.06cm/1.38x 0.71 x 0.02 inches (approximately) Describe Consistent cutting accuracy: Made of high-quality rust resistant stainless steel and titanium carbide alloy, these replacement heads ensure smooth cutting patterns every time, creating a beautifully trimmed lawn. Enhanced compatibility: compatible with various Mammotion Luba and robotic lawn mowers Easy Cutting: These replacement heads provide precise cutting capabilities, making it easy to maintain a healthy lawn. First class structure: These replacement heads are designed with first-class manufacturing processes, ensuring durability, eliminating rust issues, and providing consistently satisfactory cutting results over time. Comprehensive replacement kit: Each package includes replacement heads and screws to ensure you have sufficient supply to keep your lawn mower running at its best. Product list 24 pcs/30pcs/36pcs lawn mower head replacement (including screws, washers) Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!