Griffin Silk Bead Cord is the most popular choice when tying knots between beads in the traditional pearl-knotted style or any design of which a visible cord is an integral part. A twisted stainless steel beading needle is attached to one end of the 100 percent silk cord, making stringing fast and easy. Griffin Silk Bead Cord in size 2 is approximately .45mm (.017 in.) in diameter.