Extensive Compatibility: Designed specifically for string trimmers, this polycarbonate bladed is suitable for 18V, 24V, 40V models including RY40210 and RY40210A. Compatible models also encompass 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 offers a swift and efficient cutting experience. These 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 , a , 4 set screws for secure installation, and a handy tool wrench to facilitate easy setup and adjustments. Effortless Installation: Mounting this 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 for edging or vertical cutting as the can break easily under such conditions. For vertical applications, switching back to conventional trimmer spools is recommended.<br><br>Color: Black + Green Material: Plastic The actual product may have slight color difference or discrepancy, which not affect the use<br><br>Package Contents: 1 x 10 x 4 x Screw Set 1 x wrench<br><br>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.