Ideal especially for making collars, harnesses for larger dogs, and outdoor equipment such as backpack and belt buckles.Material: Zinc Alloy Surface Finish: Brass PlatedBreaking Load: 17 mm - 80 kg, 20 mm - 150 kg, 25 mm - 200 kgNote: Brass products may oxidize and darken. This is a natural property of brass. You can prevent this by treating the surface with a clear synthetic lacquer.