100 meters of Bulk chain on a large Spool. (100 meters is equivalent to 328 Feet). The links on each of these chains measures 3mm x 2mm and are approximately .6mm thick. The Silver Color is actually Platinum, so the color has a gray undertone like stainless steel. The Chain comes on a spool and weighs just under 1.5 pounds! All 4 colors are made of an Iron Base Metal.