Material: Constructed of stainless steel with well-polished surfaces and edges finish, 7 black cups are made of ABS plastic, durable enough to resist daily scratches and tarnishing, can last for a long serving time. One size fits most: these ring hooks come in universal size and fit into most standard sized pegboards, including 1/8 inch,3/16 inch and 1/4 inch hole diameter on pegboards, compatible with metal and non-metal pegboards. Easy to use: 7 black matching cups and 7 ring hooks, so that you do not need to buy additional accessories, Can be disassembled and combined at any time, convenient to install and remove Wide Application: the pegboard bins with rings allow you to store both arts and crafts accessories, or some other small items, hardware, hand tools and more, ideal for organizing your work bench, shop, craft room, basement, or garage. Package including: 7 pieces ring style pegboard accessories, 7 pieces black color cups. Excludes pegboard bins