Extensive Compatibility: Designed specifically for string trimmers, this polycarbonate bladed trimmer is suitable for 18V, 24V, 40V models including RY40210 and RY40210A. Compatible models also encompass various 18V Auto-Feed String Trimmers like P2080, P2008A, among others. Note: Not suitable for 40V EXPAND IT series. Advanced Blade System: The upgrade from traditional spools to 10 plastic blades offers a swift and efficient cutting experience. These blades are specifically meant for rapid weed cutting and maintain extended durability as compared to regular trimmer wire, although they are consumable and may require timely replacement. Complete Kit Inclusions: Each package is equipped with essential accessories for immediate use including 10 robust Blades, a trimmer , 4 set screws for secure installation, and a handy tool wrench to facilitate easy setup and adjustments. Effortless Installation: Mounting this trimmer is a breeze thanks to its intuitive design. Simply insert into the stringer socket and secure automatically with the side push-buttons without needing any additional adapters, ensuring a quick setup so you can start trimming right away. Usage Advisory: To optimal performance and durability, avoid using this trimmer for edging or vertical cutting as the blades can break easily under such conditions. For vertical applications, switching back to conventional trimmer spools is recommended. Color: Black + Green Material: Plastic The actual product may have slight color difference or discrepancy, which not affect the use Package Contents: 1 x Trimmer 10 x Blades 4 x Screw Set 1 x wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.