Triangular stable structure - Built-in triangular and edge frame design provides stable, balanced support, improving on traditional T-shaped or simple triangular frames. Adjustable and multifunctional design - Top auxiliary wheel buckle is adjustable to fit most straight weeders, trimmers, and Lawns mowers. Suitable for homeowners and professional gardeners. General compatibility and use - Fits shaft tubes of 0.98-1.1 inches (25-28 mm). This trimmer fixed wheel works with most backpack Lawns mowers. - Helps reduce hand and shoulder fatigue during prolonged use while delivering a sturdy, long-lasting performance. Sturdy materials and height adjustability - Constructed from metal with roller bearing screws for durability. - Robust frame allows adjustable height for optimal performance and comfort over time. Use scenarios - Long trimming sessions on large lawns where reduced fatigue is beneficial. - Landscaping projects using straight weeders or lawn mowers on uneven ground or slopes. - Edging and maintenance around driveways, sidewalks, and garden beds where stable wheel control improves accuracy.