Crafted from iron metal, break resistant, not perishable, high strength, erosion resistance, good durability, long service time Each triangular rings buckles size: 3.8x3.8x2.6cm (1.49x1.49x1.02inches Package contains: 100Pieces Metal Triangular Rings Buckles Connectors. Sufficient quantity to meet daily use, repair and crafting need High efficiency, saving and money. Using these triangular rings buckles replacement, avoiding replacing the entire trampoline mattress or attempting to sew new rings onto the mattress Suitable for trampoline mats replacement repair, and jumping cloth processing