May Arts Metallic/Nylon Silver Metallic Sparkle String. This is sold by the yard; 1 yard for each quantity that you order. The dimensions for this sparkle string is 1/8 inch. It is 50 percent nylon and 50 percent metallic. This is great for holiday tags and gift bags, for gluing onto an ATC card and other string art projects. The possibilities are endless and what a great price!