I have been teaching this technique for 15 + years and practice almost every day. This is a double weave, five row, 4mm wide Viking knit bracelet. The material of the chain is pure (0.999) fine silver wire. The toggle clasp is sterling silver. The process can take up to one hour for 1-2 inches of length. A very ancient technique of spool knitting wire around a cylinder shape. Examples have been found in the Louver Museum in Paris. However, The Viking’s coined the technique. They would use it as a form of currency when traveling. Archeological digs have discovered small 1-2 inch pieces that they would cut of and trade for goods.