This black No. 7 Griffin black bead cord has a light sheen associated with 100% silk. It is made from high-grade natural silk filament and is approximately 79 inches long. You can string a variety of beads onto this cord, just make sure the hole size is large enough! This .75mm cord comes pre-threaded onto a flexible stainless steel needle. Griffin uses a specific manufacturing process for their silk cord that puts just the right amount of tension on the thread and avoids tangling and knotting. Be sure to browse for other Griffin silk cord.