Trousers waist adjuster: 1.Waist adjuster materal:Steel. 2.Factory production. 3.High quality and reasonable price. The metal release rate for nickel, lead, antimony, arsenic, barium, cadmium, chromium, Gong, and selenium for our company's eco-certificated Stainless Steel Trousers hook and waist adjuster is completely in according with the environmental standard in Europe. And they have been ...