Triangular frame with edge rails: builtin triangular frame and edge rails provide stable support, improving balance over traditional Tshaped or simple triangular brackets. Durable metal construction with roller bearing screws: designed for long lasting use and smooth operation; adjustable height enables performance and comfort. Easy to install and use: simple, fewstep installation; adjustable height ensures even cutting and helps prevent scalping. Broad compatibility: fits shaft tubes 0.981.1 inches (2528 mm); compatible with most backpack lawn mowers; built to withstand years of use. Fatigue reduction: helps reduce hand and shoulder strain during extended mowing. Applications: use on uneven terrain or slopes to maintain a consistent cut; during long mowing sessions to reduce fatigue; for edging along paths and fences where wheel performance matters.