Features: Universal: Suitable for shaft tubes of 0.98-1.1inches (25-28mm), this trimmer fixed wheel is perfect for most backpack lawn mowers. It alleviates hand and shoulder pains caused by prolonged use of tool, provide durable support, and can withstand years of use. Triangular Stable Structure: Compared to traditional T-shaped or independent triangular structures, our lawn mower bracket wheels have built-in triangular and edge frame designs, providing excellent stability and support. High quality materials: This lawn mower support wheel is crafted from high-quality metal and plastic, with roller bearing screws for durability. Its sturdy structure ensures customizable height for high performances and comfort. Easy to installs and use: Our support wheels are designed to be easily installed with just a few simple step, saving you time and effort. The adjustable height function ensures even cutting and prevents accidental grass peeling. Adjustable and multifunctional design: The adjustable buckle on the top of the auxiliary wheel is suitable for most straight weeders, trimmers, and lawn mowers. Suitable for homeowners and professional gardeners. Specifications: Component:ABS+Nylon Size:Approx.34x12x35cm/13.38x4.72x13.77inches Package Includes: 1Pc String Trimmer Wheel Attachment note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!