The 3M Reclosable Fastener Shapes are plastic fasteners that allow you to attach two surfaces together and separate repeatedly. They consist of two parts - the stem which inserts into the socket. The socket has an internal ridge that grips the stem so pieces stay connected. The fasteners come in a variety of fun shapes like stars, hearts, moons. They are made from polypropylene plastic and measure 0.59 inches in diameter. The fasteners can be used for crafts, hanging decorations, attaching papers, and more. They have a high pull force of over 5 lbs but can be separated with light pressure on the stem. The 3M Reclosable Fastener Shapes provide a reusable, easy way to connect items.