Brand Name:Double Layer Rivet Size: 10mm*10mm Material:iron Specification:Rivet serize including Semi-Tublar Rivet、Compression Rivet、Single Layer Rivet、Double-Side Rivet. And Semi-Tublar Rivet、Compression Rivet have flat one and concave one. If you want to buy this product ,please tell us the specific size、color、material. Declare :our products are mainly exported. All products are available through the minimum testing standards in Europe and AmericaEN71-3 (8 major heavy metals test). Of course, with customer requirements, production tests can pass ROHS international standards and the latest REACH phthalate potassium permanganate test standards.