Durable Structure with 20 spring tines: Suchtale Tow Behind Dethatcher is an outdoor yard tool for uproots matted grass and dislodges hard-packed dirt for planting easy thatch removal. For the 20 spring tines, made of rust-proof and replaceable spring-loaded tines are heat-treated for greater durability, stay flexible. Wheels track behind to reduce the interference with lawn obstacles. Tips: Clean the working part from any soil residue after use. Easy to Use and Effort Saving: Operate easily with hitch pin, you can hook this heavy-duty to make up, and then start dragging. The structure of the wheel with bearings gives it a greater load-bearing capacity.