SIZE: 4mm thick, 2mm hole, 15m per roll, 1 roll per pack, the size is good for using with suitable size jewelry beads and memory wire to make jewelry accessories, and you can cut the cord to any length to meet your various needs. MATERIAL: This hollow pipe cord is made of 20% synthetic rubber and 80% PVC with light weight and smooth surface, its wear resistant and highly elastic, durable and flexible, having strong stretch, excellent resilience and high tenacity. VARIOUS COLORS: 8 different style colors, lime green, orange red, sky blue, pink, white, gray, camellia red, deep blue, these vibrant and true colors make you projects more bright and the more colors, the more choices. EASY TO USE: The rubber cord is wrapped around white plastic spool, it will not intertwined with each other and keep your cord well organized, its also easy to insert different colors of memory wire in it. WIDE APPLICATION: The rubber cords have wide range of applications in your jewelry making supplies, perfect for Jewellery making and general crafts such as home decor, corded binding, sewing, knotting, tying, wrapping and so on.