1. ISO9001:2008;RoHS;Heavy Element 2. Price:starting at $0.001 ... Socket, Torx, Rice character type, One Way etc.MaterialCarbon steel, stainless steel, SS-304, SS-302, Aluminum, Brass, Bronze, ... medium carbon alloy steel etc.Surface TreatmentZn-plating, Ni-plating, Cr-plating, ... * We start to make the product* When the goods is done, we deliver it to Shengzhen Yiantian* ...