Ring with high strength and resistance to deformation. Ideal for making dog collars, horse bridles, handbags, satchels, and belts. Material: Cast brassFinish: PolishedBreaking load: 15 and 20 mm- 200 kg, 25 mm- 140 kg, and 30 mm-150 kg Note: 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 varnish.