Stringing Products:All items that are strung on wire are strung with “Soft Flex”. I have tried every wire available over the years and Soft Flex is simply the best. Soft Flex Wire is brought to you by state of the art, micro-wire technology. It is lead free and constructed of either 21 or 49 micro woven, stainless steel wires, braided together and then nylon coated. This micro-wire technology gives you the most flexible and knottable stainless steel in the world. It is hypoallergenic, and since Soft Flex Wire is marine quality, it can be worn in and out of salt and fresh water.