1.flat head hollow rivet 2.small order accepted 3. factory, best price,good quality and servic 4. ISO9001:2008 & ISO14001:20 1 ... . the material can be titanium, copper, aluminium. iron, ... has passed ISO9001:2008 & ISO14001:2004 certification, our products have quality assurance.4. finish: zinc plated, Ni-plated, Radiant plated ...