Stable triangular frame: Builtin triangular and edge frame design provides stable tracking and reduces wheel wobble on uneven ground, offering more reliable performance than traditional Tshaped or simple triangulated brackets. Adjustable and versatile: An adjustable buckle on the of the auxiliary wheel fits most straight weeders, trimmers, and lawn mowers. Suitable for both homeowners and professional gardeners. Broad compatibility: Fits shaft tubes from 0.98 to 1.1 inches (25–28 mm). A universal fixed wheel for most backpack lawn mowers, helping reduce operator fatigue over long use. Durable construction: Metal wheel with roller bearings for smooth rotation and long life. Sturdy design allows height adjustment to suit different setups and comfort preferences. Practical uses: for edging along borders and flower beds with consistent wheel height; reliable on slopes or uneven ground for better control; ideal for long mowing sessions in large yards to lessen hand and shoulder strain.