Material: The shelf connector is made of ABS plastic, non-toxic and odorless, and can be used for a long time indoors. Very durable and will not be damaged. Easy to use: Insert the plate to be mounted into the slot of the interlocking plastic connector to ensure that all round surfaces rotate outward and remain balanced after installation. Sturdy design: With round surface; with cross incision on the back; the plastic plate is fixed stably. The inner slot provides additional friction. Dimensions and packaging: The plastic cabinet connector is 37 mm in diameter, 20 mm in thickness, is the ideal and moderate size. You will receive 20 black plastic connectors. Widely used: The plastic socket shelf can be used to easily assemble wardrobes, shoe cabinets, lockers, flower pot racks and other shelves. It can also be used outdoors, it can be used as a fence frame connection, a pet fence connection, etc. Plastic Connectors, Cube Plastic Connectors, Storage Cube Connector, Easily Install Modular and Shoe Cabinet, for Storage Shelf, Wardrobe Cube, Locker, Organizer Delivery quantity: 20 pieces Product color: black Product size: 3.7 * 3.7 * 2cm Note: Manual measurement, please allow an error of 1 - 3cm!!!Yeuri