Place of origin Changzhou.China Application Drilling, Trenching, Mining and Tunnelling, Recycling Certification ISO9001:2008 Material AISI4142 / 42CrMo Port of loading Shanghai Packing Wooden case or Iron case, Carton or Plastice box Minimum order 500 PCS Payment terms TT or L/C Supply ability 50,000 PCS/Month Delivery time 4~8 weeks