studs and spikes: 1Materials:Carbon steel 2Surface: HDG 3Certificate:ISO9001:2008, ... do according to client's Carbon steel flat hex head studs and spikes Details of the product in the photo:. 1. ... .S.A., Canada, Cuba, Germany, Japan, Singapore, Malaysia and Africa and so on. PICTURES: 1.Certificate:ISO9001:2008,SGS 2.Various ... view figures Welcome your visit! Carbon steel flat hex head studs and spikes